Hello. I purchase mine.
Ive repaird so many things with the Oatey epoxy putty stick!
I find it easier to work with than bondo and this clay like putty can be sculpted. It does harden in a few minutes and will dry gray needing painting.
It's a two-part epoxy sticky-found at big box hardware stores for about $6.
You mix press -then you can use scrape off excess (I use depleted gift card) and/or sand and paint. Cured putty is strong enough to drill through. Its a light grey putty.
Oatey Putty safely seals/waterproofs for plumbing boat repairs.... Ive used it for exterior entry door frame wood rot repair, elliptical pedal repair, multiple arts and crafts repair of furniture, pottery- wood -ceramic- concrete statues - even a garage laundry sink with a hole ( thanks for hiding that defect with carrots -previous homeowner)
Every home owner crafter or second hand shopper need a 2 part putty epoxy stick!
You can find other expensive and smaller 2 part epoxy sticks versions in the boat marine and wood repair sections this Oatey one is a great value.
Consider the epoxy putty for your repair needs.
Lots of videos how to make homemade polymer clay
Here is a collection of video tutorials. Reading comments and repsonses is helpful!
Is it to sculpt with or repair with? I use J-B Weld for repairs. Gorilla brand has a good repair stick, too.
For crafts or sculpting I would use something like this:
I agree with other comments. For epoxy clay, I'd probably purchase it, since it's a slightly more specialty item and has very specific properties. What are you planning to use it for?
Here is a short video to help you with this project. https://youtu.be/Ho5j_5HZ-CM
Check this pin https://www.pinterest.com/pin/326370304245221538/