Hard Plastic Molds

[Rosalind]

Can I use hard, plastic molds for CP? I normally use a wooden loaf mold lined with parchment paper. Do you need to line/grease the plastic molds?

 

[JackiK]

My guess is it would be impossible to get it out.

 

[soapbuddy]

It depends on the type and detail of the plastic. Some of my molds are from plastic boxes from around the house and they work fine.

 

[rubyslippers]

I've got some very thick, rigid molds that are in the shape of a shell and a fish (their original purpose was for children's sand toys) but they make beautiful individual bars of soap. Until I really got the hang of it, I had some difficulty in getting the soap out. If the mold is popped into the freezer for an hr or so, the soap comes right out. I have never greased or lined the molds with anything.

 

[jennikate]

I have a heart I bought and have used couple times spray it with mineral oil before pour and leave mold alone 2-3 days have had no issues with it. makes 2 good sized bars of soap.

 

[nattynoo]

I use some plastic containers for moulds.
I use the freezer trick.
They pop right out.
Then I just leave them to thaw out. I do find they get a bit of condensation on them when thawing but it dries out soon enough.

 

[Rosalind]

I bit the bullet and tried them out. To avoid complete disappointment, I made a 3 pound batch instead of the regular 2 pound, so I have my usual log mold as well as the hard plastic one.
I can't wait to unmold them tomorrow! I hate waiting

 

[Guywithsoap?]

I have used hard plastic containers (type that cold cuts come in when presliced) and the soap came out fine. I used no oil and it came out fine.

When I asked a similar question here someone told me that plastic is alright as long as it has a stamped sign somewhere on it which indicates it can withstand a certain degree of heat. You will see an indicator on the bottom that indicates what grade of plastic it is.

 

[Rosalind]

The molds were from mold market, and it said they were suitable for cold process, but I had my doubts.

Alas! I have used them. Ungreased, and popped in the freezer an hour prior to unmolding. It was a bit tricky at first, but once I got the hang of it they popped right out!