suggestions for putty / modeling compound?

[pandatrooper]

I was wondering if anyone had any suggestions for a good material to use?

I'm trying to create a smooth transition, between 2 flat surfaces glued perpendicular / 90 degrees to each other. So imagine an "L" shape about an inch tall on each side, and the whole thing is 2 feet long.

I want to have a smooth quarter circle transition to cover the join, so that it's a perfectly smooth transition. The join should only be about 1/4" tall. I can't use a pre-formed shape because I need to sculpt / model it a bit.

The best example I can think of is when you're installing baseboards in a house, and after you nail the base board in, you can use that sealer / caulk that comes in a tube for use in a caulking gun. You can lay down a small bead and flow it along the join, then you smooth it with your finger. That's basically what I want to do but I can't use that type of caulk (I think) because it has latex in it, and I want to paint it afterwards with Krylon / lacquer, not water based paints.

I've considered things like Bondo (awesome stuff, but hard to "flow" it into an intersection accurately of that small scale, and the cure time is too fast). I considered Milliput but it's kind of a pain to mix. I always buy some, use it once, and a month later it goes bad / hard, even though I seal the bag.

I considered construction adhesive in a caulking gun, but I think it might be hard to "smooth out" with tools as it's very tacky.

Any suggestions? Thanks in advance!

 

[Lord Boron]

I'm a big fan of Aves Apoxie Sculpt. I've had this stuff for about 2 years now and it's just as fresh as when it was new. You can get the stuff very smooth with your finger. I also like really like 3M Acryl-Blue Glazing Putty. You can get it very smooth, and sand very well.

 

[Dark asylum]

I'd also say aves epoxy sculpt it's the only materal I sculpt with for figures models vacuum form shell seems you can use water to smooth it very fast and easy and it sands and polishes very easy as well.

Or you could just use standard floor putty and a trowel the sand it supper smooth but go with Aves epoxy sculpt you'll find about a thousand uses for it in the long run.

Good luck.

 

[north3]

car body filler ... thats what i always use .if the consistancy is too thick you can thin it down with a tiny drop of cellulose thinners or fibre glass resin.
its a 2 part filler , you mix it in the ratio of a golfball size part of filler to a pea size of hardener.....
mix it up with a spatula or filler knife put it in the joint / area you want to fill then drag a coin (or something round and the same diameter os the fillet you need ) along the length of your joint.
it takes 5 to 10 minutes to harden ,when it has sand it smooth with some wet and dry paper....
remember to sand the parts before you add the filler this will help it stick....

 

[IEDBOUNTYHUNTER]

i use car body filler for the big spots and Evercoat metal glaze for smaller spots.
dont let the name metal glaze fool you its great stuff. i like it because it sticks to anything and sands smooth.