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8 Bar Large Rectangle Slab Plastic Tray Mold
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Product Notice, January 9, 2024: This product has been discontinued due to low sales. Stay tuned for exciting new product announcements!

Our large rectangle slab tray mold is made from food grade plastic and can be used with melt & pour soap bases as well as cold process soap. This mold makes one slab of soap that can be cut into 8 rectangle bars, making it easier to produce larger batches of soap.

Each bar measures approximately 3.9" x 1.9" x 1" (9.9 cm x 4.8 cm x 2.5 cm) and holds 4 ounces (weighted, or 113 g) of base. The entire tray holds 2 lbs (907 g) of soap base. We recommend allowing your soap to cool for 24 hours for easier removal from the mold. If the bar won't release, place the mold in your freezer for 30-40 minutes and try again. We also recommend pouring your soap base at a maximum of 145°F (62.8°C).

It's best to hand wash the mold with warm soapy water. Cleaning in the dishwasher or with hot water can warp the mold.

New to making soap? Learn how to use this tray with How to Make Homemade Soap with Melt and Pour Soap Base.

Made in the USA


Individual Cavity Size
4 oz (113 g)
Mold Capacity
24 oz (680 g)
Finished Soap Dimensions
3.9" x 1.9" x 1" (9.9 cm x 4.8 cm x 2.5 cm)
Prop 65 Warning

Product Reviews

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4 out of 5 Stars.
3 reviews

All Reviews

5 out of 5 Stars.
Inexpensive large production soap mold

While silicone molds are usually more durable, there's a certain sturdiness you can only get with plastic molds -- i.e., no bowed out edges, so all of your bars come out perfectly straight. This mold washes easily and the cutting indentations are super clear and easy to slice. A comment of interest is that this mold has consistently resulted in 6 bars weighing about 3.9 oz while the remaining bars are well over 4 oz.

5 out of 5 Stars.
Well it is just a mold

-cute shape
-easy removal if you let it set correctly
-thick, durable plastic

-hard to clean
-Will have to replace at some point

I definitely like this soap mold. It does its job just fine. However, I would recommend in investing in a nice silicone one instead. Silicone is easier to clean and lasts a lot longer than the plastic molds.

3 out of 5 Stars.

I haven’t tried mine yet... but I just opened my box and I’m sad. My tray looks like it was smashed into something and now has dents. It won’t create an even 8 soaps :( I don’t know if it’s even worth trying

CandleScience Profile Avatar
CandleScience responded: 2021-06-14

Hi There! We are so sorry to hear that part of your order was damaged in transit! One of our Support Team members has reached out to you via email this afternoon to see how we can help. Damage to CandleScience orders is largely rare, but we are always happy to assist if part of your order is damaged. We look forward to speaking with you again soon!