how to glue plexiglass and water seal it?

[nightmarepl]

anyone here work with plexiglass and bonding sheets together then water sealing it i heard silicone doesnt stick well to it and itll fall eventually but GE silicone supposedly stays on anyone do this?

 

[DYIguy]

I think you have to use a solvent to bond acrylic- someone here will tell you what to use I'm sure. I've used 'aquarium safe silicone' for making in tank sumps- anything that doesn't have pressure on it- wouldn't trust any silicone for sealing acrylic against water pressure

 

[MadReefer]

What about Weldon?

 

[erics210]

WELDON 4 and Weldon 16

 

[nightmarepl]

WELDON 4 and Weldon 16

yup thats what ive been told i was gonna try a epoxy marine safe then use a sealant

 

[nightmarepl]

WELDON 4 and Weldon 16

having a tough time finding it honestly

 

[nightmarepl]

also i heard chlorform will melt them together just not sure on the PSI itll hold

 

[horseplay]

having a tough time finding it honestly

I have a tube of weldon 16 i think.

 

[nightmarepl]

I have a tube of weldon 16 i think.

im willing to send you a fedex box with a return label how much you want for this thing

 

[erics210]

nightmarepl, where you located? Place in Nyack NY or Nanuet NY that makes acrylic. they sell weldon jars. weldon 4 and 16

like PVC containers.

Only order what you need as it evaporates within a few months if not

 

[nightmarepl]

nightmarepl, where you located? Place in Nyack NY or Nanuet NY that makes acrylic. they sell weldon jars. weldon 4 and 16

like PVC containers.

Only order what you need as it evaporates within a few months if not

im in hopatcong about 45 minutes from Nanuet

 

[rrspike]

Amazon for weldon , takes a few days to get it to you because of slower shipping due to product.

 

[_DZ_r€€f]

Don’t use Weldon 16 to bond acrylic if u want to build anything to hold water.. weldon 4 or weldon 3 alternatively u can use chemicals to make solvent but this is more complicated

 

[nightmarepl]

Don’t use Weldon 16 to bond acrylic if u want to build anything to hold water.. weldon 4 or weldon 3 alternatively u can use chemicals to make solvent but this is more complicated

so use weld on 4? instead of 16?

 

[erics210]

I thought the main difference was working time between 4 and 16.

I have used both, hence I just mentioned both.

 

[erics210]

 

[erics210]

 

[_DZ_r€€f]

I thought the main difference was working time between 4 and 16.

I have used both, hence I just mentioned both.

The working time deference is between 4 and 3, 4 gives you little more time then 3. 16 is more like glue And doesn’t melt acrylic while bonding which gives you weaker seam.

 

[_DZ_r€€f]

so use weld on 4? instead of 16?

Yes use Weldon 4

 

[nightmarepl]

Yes use Weldon 4

thanks bud