Author Topic: How to glue PVC pipes - inside one another  (Read 679 times)

Offline Greekman

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How to glue PVC pipes - inside one another
« on: April 12, 2018, 02:18:38 PM »
hi all! I need your ideas on this. i am in the process of advancing my collapsible Yagi antenna build out of nesting PVC pipes sections. (same as a Tv antenna)
There is a 2-inch section where there will be multiple layers (four) which should be glued together.
problem is that the fit loosely between them, and especially between the 25 and 20mm ones there is close to a 1+/32 inch gap.

Can i use 2-part epoxy glue and will it hold over time? if I can it will b easy to fill the gap with a saturated gauze layer or somthing liek that.

have yuo got any other ideas? i do not thing the special PVC glue being able to fill the gaps.

Online FreeLancer

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Re: How to glue PVC pipes - inside one another
« Reply #1 on: April 12, 2018, 02:30:52 PM »
I've had success with this on polycarbonate, which is a difficult material to bond, so PVC should be no problem:  https://www.amazon.com/Loctite-Plastic-0-85-Fluid-Syringe-1363118/dp/B0044FBB8C/ref=sr_1_3?ie=UTF8&qid=1523564406&sr=8-3&keywords=plastic+epoxy 

It's got methyl methacrylate in it, which helps fuse the plastics together, plus the epoxy is thick enough for gap filling. 

Offline David in MN

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Re: How to glue PVC pipes - inside one another
« Reply #2 on: April 12, 2018, 02:35:05 PM »
I believe Fine Homebuilding recommends a rubber coupling with hose clamps over such a joint.

Any thick 2 part should do the trick but I tend to use E6000 frequently. Often just a matter of preference.

Offline Greekman

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Re: How to glue PVC pipes - inside one another
« Reply #3 on: April 13, 2018, 12:17:27 AM »
thanks for the tips.
Funny thing is that the E6000 used t be available here too.