In part 1 I went over creating the mold, so let’s have a look at casting, and the results.
So first things first, lets extract the originals from the mold – start by loosening the edges, and then lift and peel back a corner.
It has good tear strength, but this will of course depend on the thickness of the mold, I made this one quite thin, but its still good.
The finished mold.
For casting I always use a board, and make sure I have somewhere level to set it to cure.
Using Sylmasta products again (no, I’m not being paid by them ;) ) Mixing A and B in the specified proportions, and then quickly pouring into the mold.
It needs to be thouroughly mixed, and yet you do have to work with some alacrity.
It takes about 40 seconds to start to cure after I pour, and you can see here the reaction beginning from the centre out.
Full cure in about 30 mins – you can see on the end there one that isn't properly cured in the middle as I had to make another few ml to complete the mold and I mixed it in haste and didn't get a smooth pour. it wont however matter as this is the bottom of the base.
And the results, here you see the mold, the originals and the casts.
And here you can see a mix of casts and originals. good enough for me.
Hope that was of use to you, happy to answer any questions below.