you're doing resin it seems a lot of furs are starting sculpting including me

Well, I like to dabble in a lot of different mediums. :)

i am doing poly clay to see if i can make it work because i can't draw so i am thinking in 3d because i love to build and create

That's cool. I work mostly in apoxie sculpt/two part clay.

ah haven't heard of that type sorry for mot making that last comment a reply forgot to click the tab

Well, it's a little more expensive than sculpey, but it's harder once it's cured and I like how it is to work with.

apoxie usually is tho you have to worry about cracking later with the resin

What? Resin doesn't crack. Not unless you like... stomped on it or something.

i had a replica that has some resin and it started to crack i think it could be heat and cold stress

Was it more than just resin? Resin does come in different grades, so maybe a larger complicated item or improper mixing may end up cracking. I've never had this problem unless I dropped a resin item.

well it has a hole drilled through it for a wire plus i think i might had dropped it but it was encased in metal when it did drop

I can see how the drilling would have weakened it. I've broke ceramics by drilling them after they've been fired. If they get dropped the structure tends to be weakened if you don't do it right... It's usually better to make sure there's a hole allowed in the casting process. Since I received one of Blade's BJDs I'm pretty certain it would take quite a lot to damage the body piece. For small things, they are pretty sturdy XD