Panther F

Any tips on what to use to fill in air bubbles in a resin piece? The holes are on the edges of a exhaust deflector for a Sherman.

I have tried CA and green putty ... no luck. I've washed it before applying each and when I went to sand it all falls out.

Any suggestions?


- Jeff

yellowshaker

My Feedback: (1)

Perhaps jb weld?

BiggTony

Well, 2 part epoxy putty works well.

Wozwasnt

Drill them out a bit first so the green putty has something to stick to.

WhiteWolf McBride

My Feedback: (3)

Best gap/hole filler I found?

CA & baking soda (like the box of Arm & Hammer your SO uses in the fridge to deodorize) ~NOT~ baking powder.

Best to use thin CA - put a small bit in the gap/hole, then dust with the soda. Let it set for about a minute, and then blow off the excess and repeat as needed to fill the gap/hole. It can be sanded, but not it'll be MUCH harder than the surrounding resin.

WARNING: Fumes from ~ H - E - double-hockety-sticks !! Do this in a WELL ventilated area, preferrably outside, or with a fan sucking direct to the out-of-doors.

I've used it on almost everything CA will bond to... and its ~great~ to texturize too. Yo apply my soda, I use an old denture powder bottle.

WhiteWolf

Panther F

Thanks guys, I'll try 'em all!


- Jeff

Panther G

The best way is to avoid the voids all together. Try putting your molds under a vacume when curing. Like one of those vacum bags for storing cloths and other stuff.
Pour your materials , place molds in bag , run sucker that usually comes with bags. Does not need to be a perfect 29 inches of vacume but it will help.

WhiteWolf McBride

My Feedback: (3)

Thats a point too.

And if you want a bit more, I think MicroMark (or one of those other tool places) has a hand-cranked vacuum pump. Was about $20-$30 last time I looked, with guage. Friend of mine used to use his when we made personal dupes of our BattleTech figs. He'd mix the casting material, then vacuum it to eliminate most of the bubbles, then open up, do the pour, and pop it back in and repeat.

He made his 'vacuum chamber' out of a 6" section of 8" ID lexan tube, with a lexan plate top & bottom. Top was sealed with silicone, bottom had a seal made by vaseline-ing the tube edge, making the seal-bead, and letting it cure, then popping it apart and cleaning the silicone & lexan of vaseline.

WhiteWolf

PS: Then again, if he's not doing the casting, this isn't really gonna help him, eh?

Panther F

Nah, not my work.

I bailed on it and placed it back in the drawer and now have Nicks part almost installed.


- Jeff