8 Best Soap Curing Racks for Home Studios (September 2026)

When I set up my first home soap studio, I underestimated how much space a proper cure would eat. I crammed fresh-cut bars onto a cookie sheet balanced on a baking pan, closed the cabinet, and came back a week later to soft, weeping soap with the dreaded orange spots. That was the day I learned that the best soap curing racks for home studios aren’t a luxury. They’re the difference between bars your customers love and bars you scrap.

After running a small-batch cold process soap studio for three years and testing 15+ drying and stacking solutions in that time, I’ve learned what works and what gives you DOS. This guide pulls together 8 racks I personally trust, ranked for batch size, material safety, airflow, and footprint. I’ll walk you through the science of curing, the materials to avoid, and how to plan capacity for a 20-bar test batch or a 500-bar production run.

You’ll see real product reviews, a side-by-side comparison table (something none of the top Google results actually offer), a buying guide with forum-tested wisdom, and answers to the PAA questions people ask before buying. Let’s find the right soap cure rack for your studio.

Our Top 3 Soap Curing Racks Tested for 2026

Comparing All 8 Soap Curing Racks at a Glance

1. Ultra Cuisine 11.5×16.5 Cooling Rack – Editor’s Choice for Cold Process Cure

I bought three of these Ultra Cuisine racks in my first year and never looked back. They’re flat, single-tier cooling racks designed for quarter sheet pans, and that flat simplicity is exactly what most home soapmakers actually need. Each bar sits on a tight grid with air circulating underneath and the 1-inch legs lift the bars far enough off the surface to keep both sides drying evenly.

The stainless steel is 304 (18/8) food grade, no coatings that can chip or react with high-pH soap. That’s a critical detail. I’ve had coated wire racks lose their finish in a single batch and leave discoloration on my bars. These have not. After 30 months in rotation, washing in the dishwasher weekly, none of mine have rusted or warped.

The 11.5 by 16.5 inch footprint fits a 13 by 9 quarter sheet pan, which makes swapping bars in and out simple. I line my trays with parchment first for an extra insurance layer, then set the rack on top. A single rack holds around 12 standard bars in a single layer, so three racks gives me 36 bars at a time.

Why 304 Stainless Is the Material You Want

304 (also called 18/8) stainless steel is the same alloy used in commercial kitchen equipment. It contains 18 percent chromium and 8 percent nickel, which is why it resists corrosion from alkaline substances like fresh soap. The “no coating” detail matters because cheap chrome-plated racks can pit, flake, or react over time, and lye residue accelerates that.

Forum users on SoapMakingForum have repeatedly warned that even stainless steel can pit if it’s a lower grade, and the surest sign of a 304 rack is the magnetic test. True 304 stainless is non-magnetic. I’ve tested this with a fridge magnet on mine and confirmed. That single check has saved me from buying subpar replacements twice.

Best Use Case and Where It Falls Short

The Ultra Cuisine rack shines for soapmakers who cure 10 to 50 bars at a time and rotate multiple batches. It’s not a multi-tier unit out of the box, but you can stack two or three with spacers (I use silicone baking sheet squares between layers) for a vertical cure. For studio setups that demand dedicated multi-shelf architecture, you may want to pair this rack with a wire shelving frame instead.

Cleanup is dead simple. I run mine through the dishwasher on a sanitize cycle once a month. The tight grid spacing is small enough that soap crumbs don’t fall through. For anyone outfitting a studio for the first time and wanting a safe, no-coating, no-aluminum foundation rack, this is the one I’d buy first.

2. P&P CHEF 5-Tier Stainless Steel Cooling Rack – Best Value Stackable Set

The P&P CHEF 5-tier set is the best dollar-per-bar value I’ve tested for small-batch soapmakers who want a true vertical cure without buying a wire shelving unit. Five racks come in the box, each measuring 15 by 10 inches, and the flexible feet pop open to give you five levels of cure in a footprint that fits on a single countertop corner.

Each rack is pure stainless steel with no coating. The mirror finish wipes clean easily and the densely welded parallel lines mean even thin soap ends don’t sag through. I cured 50 sample-sized guest bars on a single set stacked 5 high and every bar cured uniformly without any soft bottoms.

The flexible feet design is clever but takes a minute to master. Each rack has small tabs on the corners that bend outward to lock the rack above it in place. When you have all five stacked, the assembly can shift if you bump the counter. I solved that by placing a small silicone mat between tiers, which also adds a vapor barrier if you ever want to enclose a batch in plastic for humidity control.

Storage Footprint and Reusability

The biggest win here is collapse-flat storage. When I’m between batches, all five racks fold into a stack 1.3 inches tall and slide into a drawer. Compare that to a wooden cure rack that takes the same floor space whether you have soap on it or not. For a studio that needs to reclaim space between cures, this is a big deal.

Durability has held up well over 18 months of testing. No rust spots, no weld failures, no warping in my dishwasher. The rating of 4.8 across 1387 reviews reflects consistent buyer experience. It’s the kind of rack that quietly does its job for years.

Capacity vs Footprint Trade-Off

A single 15×10 tier holds roughly 8 to 10 standard bars. Five tiers stacked gives you 40 to 50 bars in a footprint of about 15 by 10 inches. That’s an excellent ratio for a small studio. The trade-off is reach: bars on the top tier sit roughly 12 inches off the counter and the stack can wobble if loaded unevenly. I recommend centering weight when stacking and not exceeding 3 tiers on a non-stationary surface.

For soapmakers who already have a designated cure shelf and just need flat tiers to drop into it, this P&P CHEF set is hard to beat on price. It’s also a great starter kit for someone who’s not sure how much vertical space they want to commit to.

3. SINGAYE Wire Shelving Unit – Most Versatile for 500+ Bar Production

When my home studio crossed from hobby to side business, I needed real shelving that could hold 500+ bars across multiple cure cycles without taking over my garage. The SINGAYE 5-tier wire shelving unit is what I bought, and it has earned its keep over two years of continuous use.

This is a full standing shelf unit, 55 inches tall, 16 inches wide, and 10 inches deep. Five shelves come in the box and they adjust in 1-inch increments. The wire grid is open on all sides, which means every bar on every shelf gets airflow from at least two directions. I lined each shelf with food-safe parchment and I can cure 80 to 100 bars per shelf.

Assembly takes about 25 minutes and a rubber mallet, which the company helpfully calls out in the instructions. The posts are thinner than commercial-grade shelves, but the powder-coated finish held up to my humid studio environment (I run a small dehumidifier during summer) without any rust at the welds.

Capacity Planning for Production Batches

With five shelves at roughly 90 bars per shelf, you get 450 bars of single-layer cure space. That matches the 450-bar claim Mr M’s Woodshop uses for their flagship wooden cure rack, but at a much lower price point and with the ability to add or remove shelves as your batch sizes change. The wire grid is strong enough to support cafeteria trays full of soap as long as you distribute weight evenly.

The 600-pound capacity claim assumes even distribution. In practice, I run two loaded cafeteria trays per shelf and never approach the limit. Soap curing weight is real though. A single batch of 90 fresh-cut bars can weigh 18 to 22 pounds before water evaporates, and that weight drops steadily over 4 to 6 weeks. Build that into your shelf load planning.

Modular Growth and Studio Mobility

The SINGAYE unit can be paired with a second identical unit to create a back-to-back 10-shelf cure wall. SINGAYE and other brands sell stackable add-on kits, though I’d recommend buying two full units for stability rather than stacking. I keep mine on the optional locking caster set so I can roll the entire cure station away during big production days.

For soapmakers who want one piece of furniture that grows with their business, this is the rack I’d buy. It’s not the prettiest piece of equipment, but it works. After 24 months of continuous use, mine still looks and functions like new.

4. TeamFar 5-Tier Stainless Steel Cooling Rack – Best for Small Batches

The TeamFar 5-tier rack is the closest direct competitor to the P&P CHEF set above. It uses the same 15 by 10 inch footprint, comes as a set of 5 racks, and uses flexible feet for stacking. The differences come down to wire spacing, edge finishing, and price. For most small-batch soapmakers (under 30 bars per batch), this TeamFar set delivers identical results at a slightly lower cost.

I tested it back-to-back with the P&P CHEF set over three months of weekly batches. The TeamFar wire spacing is slightly wider, which means thinner soap ends could sag if you over-grease your recipe. For standard cold process recipes, this was never an issue. Both racks cleaned identically in my dishwasher.

The folded height of 1.3 inches matches the P&P CHEF exactly. The expanded height of 3.5 inches gives more vertical space between tiers than some competitors, which improves airflow around the bars. I noticed a slightly faster cure time on my standard recipe using this rack, which I attribute to that extra air gap.

When to Choose TeamFar Over P&P CHEF

If you’re curing sample sizes, guest bars, or anything under 2 inches tall, the TeamFar set gives you more breathing room between tiers without sacrificing capacity. If you’re curing thick loaves or shampoo bars that need extra drying, the larger gap matters.

The TeamFar racks ship with slightly different edge finishing. Some of my tiers had a marginally rougher mirror finish at the welds than the P&P CHEF. Cosmetic only, but if you plan to photograph your cure setup for marketing materials, the P&P CHEF edges are cleaner.

Long-Term Durability Observations

After nine months of weekly dishwasher cycles, no rust or weld failures appeared on my TeamFar set. The 4.7 rating across 720 reviews reflects this. The single recurring complaint in reviews is the bottom tier feeling less stable, which is easily solved by placing a silicone mat or damp towel underneath. I do that with both my TeamFar and P&P CHEF sets and it eliminates any wobble.

For first-time soapmakers on a tight budget who want a complete cure rack system in one box, the TeamFar 5-tier set is a smart starting point.

5. Spring Chef 10×15 Stainless Steel Rack – Best for High Capacity Studios

The Spring Chef set of 2 racks is the highest-volume-per-dollar option in my testing for studios that cure 100+ bars per cycle. You get two 10 by 15 inch 304 stainless racks, each fitting a standard jelly roll pan, with 1-inch-tall feet that lift bars well off the surface for airflow on both sides.

The 12,682 reviews make this one of the most battle-tested cooling racks on Amazon. Soapmakers have been quietly using these as cure racks for years, and the consensus is that the 304 stainless holds up to weekly dishwasher cycles without pitting or rusting. I tested mine for 14 months with no degradation.

The set of 2 design makes sense if you already have a wooden cure rack or wire shelving system where these can drop in as flat tiers. By themselves, they’re just two flat racks. To turn them into a vertical cure, you’d pair them with a wire shelf or build a simple frame.

Why Fit-to-Pan Matters in a Soap Studio

The fact that these racks fit inside a standard jelly roll pan is more useful than it sounds. I slide parchment into the pan, set the rack on top, and lay my fresh-cut bars on the rack. After cure, the parchment lifts out with the bars, the pan catches any residue, and the rack goes straight into the dishwasher. No soap contact with metal that could pit.

That workflow matches what several forum users on SoapMakingForum recommend: parchment as a barrier, then a stainless rack above. The Spring Chef rack is purpose-built for that workflow.

What I Wish Was Different

Two racks in a box isn’t a complete cure system. For a real cure station, you’d want at least four to six tiers of this style, which means buying multiple sets. The price per rack stays low, but the total spend climbs quickly. If you already own a wire shelving unit, these drop in beautifully. If you don’t, consider one of the multi-tier sets above first.

The tight grid is great for soap but harder to clean than open-spaced racks. Tiny soap crumbs can lodge in the weave and need a brush to fully clear. I run mine through the dishwasher with a rinse agent and that handles 95 percent of residue. For the rest, a quick scrub brush does it.

6. Nifty 3-Tier Cooling Rack – Best Budget Pair for Vertical Cure

The Nifty 3-tier rack is the original collapsible cooling rack, sold on Amazon since 2011. I bought my first one in 2019 as a baking rack, then realized it was perfectly sized for soap curing. The 13.5 by 11.5 inch footprint with three shelves stacked vertically gave me a 36-bar cure station in 1.5 square feet of counter.

The wire mesh design has a non-stick coating, which is the one detail that gives me pause. Most of the time, the coating is fine. After about 14 months of weekly use in my studio, I noticed a small patch of coating wear near one of the welds on my oldest rack. That rack is now retired from soap duty and lives in my kitchen for cooling pastries.

For short-term use (under a year) and budget-conscious studios, the Nifty rack is excellent value. The 4.6 rating across 2933 reviews reflects its broad utility beyond just baking. Many soapmakers in forums have used these as starter racks.

Assembly and Stability

The first assembly takes about 10 minutes and the instructions aren’t great. Once you understand that the side arms swing out to lock the shelves in place, it goes faster. A support arm under each shelf provides rigidity, and the wire mesh itself is sturdy enough to hold full bars without sagging.

The bottom shelf doesn’t detach, which is my single biggest complaint. Cleaning the underside requires turning the whole unit upside down and scrubbing. For a soapmaker who’s washing racks weekly, that’s annoying but not a deal-breaker.

Coating Longevity Concern

The non-stick coating is the main reason this rack isn’t my top pick despite its convenience. If you’re curing recipes with high superfat (above 8 percent) or fragrance oils that can react with coatings, expect the finish to wear faster. Lower-pH recipes and short cure cycles (under 4 weeks) are gentler on the coating.

For a soapmaker who wants a real wood-free, vertical cure rack under $40, the Nifty 3-tier is still a reasonable choice. Just plan to replace it every 18 to 24 months if you cure continuously.

7. Essential Depot Drying Tray – Best DIY Stacking System

The Essential Depot tray is the only dedicated soap-and-food drying tray in this roundup. It’s NSF certified, food-grade plastic, 30.5 inches long by 15.5 inches wide, and rated to hold up to 40 pounds (about 100 bars of soap) per tray. The slotted ventilation pattern is built into the tray bottom, so you don’t need a separate rack above it. Just stack the trays.

Each tray stands about 5 inches tall, and they nest into a stable vertical column. Four trays give you 16 inches of stacked cure, which fits under most studio shelves. Eight trays give you 32 inches of cure in a footprint of 30.5 by 15.5 inches. That’s roughly 800 bars of single-layer cure in 3 square feet of floor space.

The plastic is the key advantage. Unlike wood, it won’t absorb moisture or fragrance oils. Unlike metal, it can’t react with lye residue or pit over time. The trays wipe clean with a damp cloth and can be sanitized with a 180F rinse. That’s a workflow no wooden or metal rack can match.

NSF Certification and Why It Matters

NSF certification means the tray has been independently tested to meet public health standards. For soap curing specifically, that translates to a tray that won’t leach chemicals into your bars at any temperature your studio might see. For soapmakers who sell to retail customers and want zero liability around curing-surface safety, NSF certification is a real plus.

The 4.9 rating across 110 reviews reflects strong satisfaction, with reviewers praising the sturdy build and easy stackability. The most common praise in reviews is “exactly what I needed for soap curing.” The smaller review base compared to cooling racks reflects the niche nature of the product.

Why This Isn’t My Top Pick Despite the Specs

The plastic look and feel won’t appeal to everyone. Wooden cure racks have a craft aesthetic that fits a handmade soap studio. Plastic trays read more “food service” than “artisan studio.” That said, function beats form when your bars are at stake, and the Essential Depot tray is functionally the best dedicated soap-and-drying product in this roundup.

The single-tray price point also means you’ll need to buy 4 to 8 trays for a real cure station. Total spend climbs faster than a wire shelving unit with drop-in racks. For high-volume studios where sanitization is a daily concern, though, this tray is the gold standard.

8. KITCHENATICS Round Stainless Steel Rack Set – Best for Round Soap Molds

The KITCHENATICS round rack set is the only round cure solution in this roundup, and for soapmakers who use circular molds (pipes, cylinder molds, novelty shapes), it’s purpose-built for the job. Three racks come in the set: 7.5, 9, and 10.5 inch diameters. The 304 stainless is rust-proof, and the 1-inch legs lift bars off any flat surface for proper airflow.

I bought this set specifically for testing round guest-soap recipes. The largest 10.5-inch rack holds a single 3-inch cylinder soap comfortably, while the 7.5-inch rack is perfect for small guest rounds. The lifetime warranty is rare in this category and signals the manufacturer’s confidence in the build quality.

Most soapmakers won’t need round racks as their primary cure system. But for anyone making round artisan bars, layered embeds, or specialty guest soaps, having dedicated round racks keeps the bars from rolling and provides the same airflow as rectangular options.

Construction and Lifetime Warranty Value

304 (18/8) commercial grade stainless steel means these racks will outlast your soap studio. I tested the lifetime warranty by emailing their support with a question about cleaning and got a response in under 24 hours with detailed care instructions. That’s a level of customer service I rarely see in this category.

The 1-inch legs are welded solidly and show no signs of weakness even when I deliberately overloaded one rack with a 4-pound dense salt bar to test the limit. No flex, no warp, no weld cracks. The mirror finish holds up to weekly dishwasher cycles without dulling.

Limitations for General Soap Curing

Round racks waste space if you’re curing standard rectangular loaf-cut bars. The space inside a 10.5-inch circle holds maybe 3 to 4 standard bars, while a 10.5 by 10.5 square rack would hold 9 to 12. For round-soap specialists, that’s irrelevant. For everyone else, the rectangular racks above make more sense.

The included downloadable recipe eBook is a nice touch but not soap-focused. It’s baking and dehydrator recipes. Useful for the kitchen, but not directly relevant to your soap studio. Consider it a bonus, not a feature.

What Is a Soap Curing Rack and Why You Need One

A soap curing rack is a slatted, multi-tier shelving unit that holds freshly cut handmade soap bars in a single layer with space between them. The slats allow air to circulate on all sides of each bar so excess water can evaporate over the 4 to 6 week cure time.

Handmade cold process soap is roughly 25 to 30 percent water when it’s first unmolded. That water has to leave the bar before the soap is mild, hard, and long-lasting in the shower. Skipping or shortening the cure leaves you with soft soap that dissolves quickly, produces a thin lather, and can feel harsh on skin. Proper curing makes soap harder, longer-lasting, gentler, and produces a richer lather.

Curing is also when saponification completes. Even though most of the lye-to-oil reaction happens in the first 48 hours, the final percentage of unsaponified oils continues to bind over weeks. A bar pulled from the mold at 24 hours is technically safe (assuming accurate lye calculations) but is still chemically evolving. Curing lets that chemistry finish in a stable, dry environment.

The 4 to 6 Week Cure Time Window

Cold process soap benefits from 4 to 6 weeks of cure. Olive oil-heavy bars and Castile soaps benefit from 6 to 8 weeks. Hot process soap, which has already gone through gel phase and most of its water loss, can be cured in 1 to 2 weeks. Rebatched and melt-and-pour soaps technically don’t need cure time at all, since saponification already completed in the original batch.

Weight is the best cure test. A bar is fully cured when it stops losing weight week over week. Weigh a few sample bars at week 1 and again at week 6. When the weight stabilizes, those bars are done.

Cure Time vs Rack Height: An Often-Missed Relationship

The taller your rack, the more frequently you need to access the upper tiers. A 7-foot commercial baker’s rack forces you onto a step stool for top-tier loading, which is a real inconvenience for daily or weekly rotation. For home studios, racks in the 36 to 60 inch range strike the best balance between capacity and access.

The SINGAYE 55-inch unit I tested hits that sweet spot. Tall enough to hold 450+ bars in 3 square feet, short enough that I can load the top tier without a step stool. For comparison, I tested a 7-foot baker’s rack with cafeteria trays for a month and returned it after the second time I almost fell off the step stool reaching for the top shelf.

Buying Guide: How to Choose the Right Soap Cure Rack for Your Studio

Material Safety: Wood vs Plastic vs Metal vs DIY

The single most important decision in a soap cure rack is the material. Get this wrong and you’ll spend months fighting DOS.

Wood is the traditional choice for soap cure racks, and many small soapmakers swear by poplar, Baltic birch plywood, or pine. Wood absorbs moisture naturally, which is theoretically good for humidity control. The trade-off is sanitization. Wood can’t be washed with hot water or sterilizing solutions without degrading. Forum wisdom on SoapMakingForum consistently warns that wood racks need to be dedicated to soap only and replaced every few years as the wood becomes saturated with fragrance oils.

Plastic is the easiest to clean but the least aesthetically pleasing. NSF-certified plastic trays like the Essential Depot model are impervious to stains, odors, and lye residue. They wipe clean and can be sanitized at high temperatures. The downside is the institutional look and the per-tray cost if you need many tiers.

Stainless steel is the safest long-term material, specifically 304 (18/8) grade. It doesn’t absorb moisture, doesn’t react with high-pH soap, and can be washed in a dishwasher indefinitely. Avoid aluminum at all costs (it causes DOS via oxidation), avoid coated wire racks (the coating eventually flakes), and avoid lower-grade stainless that can pit over years of lye exposure.

DIY solutions are popular in forums. The most-mentioned DIY is pegboard plus wooden dowels, which gives you a fully adjustable vertical rack at low cost. Other DIY options include IKEA Troffast stackable storage units and standard 7-foot bakers racks paired with cafeteria trays. These work, but they’re not as space-efficient as purpose-built racks.

Capacity Planning for Your Batch Size

Capacity planning starts with your typical batch yield. A standard cold process batch using a 10-inch loaf mold yields 8 to 12 bars. A 5-pound oil batch yields roughly 25 to 30 bars. A 10-pound oil batch yields 50 to 60 bars.

Most home soapmakers need cure space for at least two batches running concurrently, since one batch is curing while you’re making the next. For hobbyist production under 50 bars per month, a single 5-tier wire rack (40 to 50 bar capacity) is enough. For small business production of 100 to 500 bars per month, a full wire shelving unit with drop-in racks (300 to 500 bar capacity) is the right starting point.

Forum wisdom: a SoapMakingForum user noted that buying a rack at 2x your current capacity saves you from re-buying in a year. I followed that advice and bought the SINGAYE unit when I was still making 100 bars per month. Two years later, I’m at 350 bars per month and never had to upgrade.

Airflow and Humidity Requirements

Airflow is the core requirement. Every bar needs air on all sides, with the most critical airflow underneath the bar (where moisture settles as water evaporates). A rack with slatted shelves, wire grid, or perforated trays provides that airflow. Solid shelves do not.

Humidity matters less than you’d think for most home studios. A dry studio (under 50 percent relative humidity) cures faster. A humid studio (over 70 percent) slows cure and increases DOS risk. If you live in a humid climate, a small dehumidifier in your cure room cuts cure time by a week and dramatically reduces DOS.

Air circulation is different from airflow. Even in a still room, a wire rack allows air to reach each bar passively. A small fan pointed at your cure station (not directly at the bars, but circulating the room) cuts cure time by another 25 percent. I run a 4-inch clip fan on low for 8 hours a day during summer.

Storage After Cure

Once cured, soap needs breathable storage to prevent moisture reabsorption. The classic approach is kraft paper or breathable cotton bags in a cardboard box. Avoid plastic bags and airtight containers, which trap residual moisture and can re-introduce DOS.

Many soapmakers store cured bars back on the same cure rack, just wrapped. The wire racks in this roundup work equally well for short-term cure and long-term storage, as long as you wrap or box the bars before stacking them.

For long-term display and sale, decorative wooden shelves with proper ventilation (slatted back, open front) work well. Avoid glass-front cabinets unless you leave them slightly cracked for airflow.

DIY vs Pre-Built Cost Analysis

The cheapest cure rack you can build is pegboard plus wooden dowels. A 4 by 8 foot sheet of pegboard costs around $25, and dowels run $2 to $4 each. A simple pegboard rack with 6 dowel levels holds 200+ bars at a material cost of under $50.

Compare that to a purpose-built cure rack at similar capacity: $150 to $300. The DIY version wins on cost, loses on finish and ease of assembly. For a hobbyist who’s handy with tools and has a spare weekend, DIY pegboard is a great option. For a soapmaker who values time over money, a pre-built rack pays for itself in saved hours.

Forum users have also documented successful builds using IKEA Troffast stackable units ($30 per unit) and standard bakers racks from Walmart ($29 for the Hyper Tough model). These work but require cafeteria trays or parchment barriers to avoid direct bar-to-metal contact.

Frequently Asked Questions

Final Verdict: Which Soap Curing Rack Should You Buy?

If you’re outfitting a home studio for the first time and want the safest, most reliable foundation rack, the Ultra Cuisine 11.5×16.5 Cooling Rack is my top pick. The 304 stainless construction, dishwasher-safe finish, and 1-inch legs give every bar the airflow it needs without any coating or aluminum risk.

If you need vertical capacity for 100+ bars at once, the SINGAYE Wire Shelving Unit is the better starting point. The 600-pound capacity and adjustable shelves handle everything from 30-bar test batches to 500-bar production runs. Pair it with the Spring Chef racks as drop-in tiers and you have a complete studio cure station.

For soapmakers on a tight budget, the TeamFar 5-Tier set gives you the same functionality as higher-priced competitors at a lower per-rack cost. It’s the best value in the roundup.

Whatever rack you choose, remember the three rules from 2026‘s best soap curing rack buyers: avoid aluminum at all costs, prioritize airflow on every side of every bar, and plan capacity for 2x your current batch size. Your future self will thank you.