Join Date: Jul 2012
Location: Mississauga, Canada
Straight up, sounds like you have to mix your putty differently. Think blue = hard stuff and yellow = soft stuff; I usually do about a 1:2 ratio of them depending on the application.
I have used Magic Sculpt, Apoxie Sculpt, Milliput (there's so many different types of this it's almost absurd), and Kneadatite. The softest and most workable of all those in my experience (and that of MotF, whose videos I based much of this knowledge on and are worth a re-watch if you missed these tidbits) is Kneadatite, so much to the point that I won't cast with it anymore as with too much blue it fights the mould and with too little it remains soft after curing.
Do you have some sort of silicone tipped clay shaper that is relatively stiff to help smooth things out? I tend to use my colour shaper (as it's called at the art store), hobby knife, and pointy dental pick most out of all the things I have. Either way keeping them and your putty wet the whole time is absolutely crucial. I will often as I'm working sort of pocket my remaining putty damp and in the palm of my left hand (the one often just holding the item being worked on). Did it once while at work out of necessity repairing some plaster moulding we were installing and the warmth of my hand kept it exceptionally pliable, now I do it as often as I can.
Last edited by ntaw; 09-20-17 at 02:12 PM.