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Verified Purchase
Disappointed but OK

The details on this mold are very shallow and the soap runs if not done VERY carefully. Using M&P I have only had them stick once with the Celtic tutorial on SoapQueen. I also have a lot of trouble getting the soap out, to the point of putting it on the floor and using my heel to break the airlock. The bars are bigger than standard soap and too big for me so I just don't fill the mold completely. All things considered I will stick with silicone molds.

Kelsey from Bramble Berry replies...
Hi Kathleen! I'm sorry this mold wasn't your favorite. We love the Celtic Rectangle, Heavy Duty mold, though it can take some patience and a steady hand to fill in those details. We recommend using the Injector Tool to carefully fill in those spaces, as seen in our Celtic Melt and Pour Soap Tutorial. If you get any soap outside the lines, you can use the Clean Up Tool to fix it. The heavy duty plastic molds can also be a bit tricky to unmold from. It may work to pull apart from the sides of the mold versus apply pressure from your heel to the top of the mold. A little Cyclomethicone or mineral oil will also work nicely to help the soap pop out more easily if you spread a little on the mold before pouring your soap in. Another trick is placing your soap in the freezer for about 30 minutes. This will result in the soap constricting slightly and make for an easier removal. I hope this helps!

Verified Purchase
Robert Rayburn
Love the mold!

I was concerned that the intricate details of these molds would make the soap difficult to remove. Not at all. I used a 2 parts water to 1 part lye ratio and added sodium lactate to the lye water at a rate of 1tsp sodium lactate to 1lb oil. I was able to remove the soap after 8 hours easily by inverting the mold and light pressing on the bottom of the mold in the center of the pattern. The soap released immediately. The soap was hard enough that it was not damaged, but still needs curing. I did not gel the soap. I will purchase more of these molds. I do wish that these molds would be made in silicone so I could oven process.

Verified Purchase
beautiful design

This is one of my favorite mold designs I own. The knot comes out gorgeous if done right. I find the indentations of the knot design itself to be a bit shallow and you definitely need a very steady hand and a syringe or similar type tool when doing those details. I really wish they were deeper. These heavy duty molds aren't the easiest to unmold from either. I HAVE to pop them in the freezer or the soap just will not come out and I only work with m&p. I have tried waiting over night to make sure the soap is completely cooled and still have a hard time unmolding them. The freezer is your friend with these molds. I still find the extra work worth it though because the design is so pretty.

Verified Purchase
Makes good large bars

I've been using the "Celtic Rectangle" for several years, mostly with rebatched soaps, but occasionally with M&P. It makes a good large bar with a deep imprint of the design and I like it--in fact it's my favorite soap mold. The white plastic mold material is a little brittle so you do have to be careful when unmolding. I really like these plastic 4-cavity molds--they're great for the small batches that I do. I've just purchased the oval "Tree Spirit" which is made of the same plastic, and expect to get lots of use out of it. The "Eye of Horus" is also a beautiful design in the Heavy Duty line.