cwolfs69
Member
i believe i read somewhere that PR casting can be helped by curing in an oven for some period of time. can anybody help me with what temps to use and how long to cure.
Toaster oven .... outside of the house ... 150 degrees for 20 minutes has worked well for me.
I let mine cure a good 12 hr then put put in sun for another few hours.
What is your problem are they still soft or are they just tacky. How much MEKP did you use, how long have they set, what is your ambient temp.
As others said a longer cure time is better if you choose to use heat don't use more then 150 for an hour or 2 at most then let set. More heat (faster cure) = a more brittle product like glass.
Good Luck
I let mine cure a good 12 hr then put put in sun for another few hours.
What is your problem are they still soft or are they just tacky. How much MEKP did you use, how long have they set, what is your ambient temp.
As others said a longer cure time is better if you choose to use heat don't use more then 150 for an hour or 2 at most then let set. More heat (faster cure) = a more brittle product like glass.
Good Luck
no, i have had no problems. just wondering if about people curing them in the oven. i cast and just let them sit in the shop for 3-4 days before i attempt to use them in the summer i will put them out in the sun as others do. was just kinda cuiour about the oven curing. didnt know if i was missing out on something. from what i see here it just speeds up the process. oh well i guess i do not need an oven after all.