What kind of glue?

[scoob8000 10+ year member]

What kind of (CA) glue would one use to repair a cracked plastic cone?

I did some quick googling and there are so many different types of CA glues out there. Rubberized, non ruberized, quick set, thick, etc.. FWIW the plastic is black.

I assume the rubberized is the black goop you often see around tinsel leads and on the back side of some terminals.

Click to read more...

 

[Twisted_0912 10+ year member]

two threads//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

 

[NDMstang65 10+ year member]

You can't use CA on poly, it will crack.

 

[boomin spl 10+ year member]

the CA won't bond to 99% of poly. Depending on what your trying to fix, you will have to try some 2part epoxy or some rubber based adhesive

 

[scoob8000 10+ year member]

two threads//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

The forum was having a moment as I hit submit. Tried to delete the second thread but there isn't an option.

You can't use CA on poly, it will crack.

Dang, glad I asked then! //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

[EDIT]

Just looked up the specs. The cone is described as "PROPRIETARY COC/GRAPHITE CONE injected with Nitrogen bubbles"

 

[John_E_Janowitz 10+ year member]

You can use CA on poly. You just have to prep it. Use loctite 770 primer and any good rubber toughened CA glue.

John

 

[NDMstang65 10+ year member]

So what happens when the entire cone assembly flexes/deflects and the ca cracks off? It's brittle..even if you prep it it still doesn't keep it from being brittle...which is why we don't use CA on the poly dust-caps. It cracks off...

 

[scoob8000 10+ year member]

Well I can't seem to find anything on the internet about gluing COC (cyclo-olefin-copolymer) plastic.

I'm waiting for the manufacturer to open now to give them a call.

 

[NDMstang65 10+ year member]

Goop it

 

[sundownz Pro Seller]

I've had issues with CA on poly as well - I started using epoxy which works great for me.

Have also used goop and it works well too.

 

[scoob8000 10+ year member]

Just spoke to the manufactuer.. He suggested putting some blue painters tape on the inside of the cone on the crack, and use some thin CA on the back side.

They told me the CA would be fine, just not to use the accelerator on it because i could deform that part of the from the heat of it curing.

The cone definitely isn't poly, but I didn't think to ask what the dustcap was made from..