Weld-on 3 and polycarbonate works fine

mcgyvr

New member
Just for everyones reference.. (Ive seen a lot of people here saying it doesn't work)
But it does.. Works just fine and is a very..very strong bond..just like acrylic solvent bonds.

I'm not saying polycarbonate is better than acrylic or anything (both have their uses).. but just saying you can easily solvent bond polycarbonate using weld-on #3 (and probably #4 too) and get a very strong long lasting bond.
 

Acrylics

Active member
Of course :) 3, 4, 5, 16, 40, 42, 2007, and several other things work, including PVC pipe cement.. :)

The bonds are nowhere near as strong as acrylic bonds, but will still hold well :)
 

mcgyvr

New member
I just wanted to post that since EVERY post I saw said it doesn't work and shouldn't be done.. My 48" internal coast-coast overflow disagrees..

When I get some free time I will do tensile testing on acrylic vs polycarbonate solvent bonds.. But I know that there is NO way I could break the bonds..I tried.. So its very strong IMO..
 

Gorgok

New member
As as aside, i have used a thread found via Google on many occasions to see solvent/plastic compatibility. Its fairly extensive...

http://nerfhaven.com/forums/index.php?showtopic=18527

Under polycarbonate you get this:

Polycarbonate
- 1,2 Dichloroethane: Y
- Acetone: Y
- Cyclohexanone: Y
- Dichloromethane: Y
- MEK: Y
- Methyl benzene: Y
- Tetrahydrofuran: Y
 

neurosis05

New member
This seems like a good place to ask this, how much weld on 3 (or 4) would I need to make a sump that is roughly 50 x 20 x 30? Probably have a total of 6 baffles. Maybe a stand for my skimmer. Would 4 oz make it? I think I might order from TAP plastics and it comes in 4oz or 1 Pt. Thanks
 

Acrylics

Active member
This seems like a good place to ask this, how much weld on 3 (or 4) would I need to make a sump that is roughly 50 x 20 x 30? Probably have a total of 6 baffles. Maybe a stand for my skimmer. Would 4 oz make it? I think I might order from TAP plastics and it comes in 4oz or 1 Pt. Thanks
4oz should be fine, but I'd say you're cutting it close. If the 16oz can isn't too much more - might be a good idea :)

James
 
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