Define Polycarbonate glue...

[EricH]

Originally Posted by IndySam

Loctite makes many amazing glues and epoxies. Loctite epoxy held our robot together last year.

Yep, but when the rule says "Loctite or similar threadlocking product", you're kind of limited to the threadlock versions. Might work, but might not.

[dlavery]

Threadlocker is a thin, special purpose adhesive. An adhesive is a glue. IndySam is right. Let it go.


-dave



.

[rmacivorbang]

We want to use epoxy to glue a magnet to the aluminum on the minibot. Is epoxy an allowed polycarbonate glue?

[Mike Betts]

Originally Posted by rmacivorbang

We want to use epoxy to glue a magnet to the aluminum on the minibot. Is epoxy an allowed polycarbonate glue?

If you want an official answer, Ask the GDC.

In light of their recent rulings, I would imagine their answer would be "A polycarbonate glue is anything that is marketed as a polycarbonate glue". But this is only an educated guess...

[jmulik]

Close .. the GDC clarifies:

"Any glue that is marketed as specifically for bonding polycarbonate is allowed per R92-G. "

http://forums.usfirst.org/showthread...rbonate+glu e

By the definition,
http://www.amazon.com/Weldon-16%C3%A...6515284&sr=8-7

on amazon would work ... there are several glues in the paint section at the local Home Depot that say Acrylic, and I am going to go back and check, but I suspect that somewhere in the description of the Acrylic glues they also say also polycarbonate.

[IndySam]

Originally Posted by jmulik

Close .. the GDC clarifies:
... there are several glues in the paint section at the local Home Depot that say Acrylic, and I am going to go back and check, but I suspect that somewhere in the description of the Acrylic glues they also say also polycarbonate.

Acrylic glues at the hardware store are glues that are based on an acrylic polymer emulsion not a glue made for gluing acrylic.

[boomergeek]

Originally Posted by jmulik

Close .. the GDC clarifies:

"Any glue that is marketed as specifically for bonding polycarbonate is allowed per R92-G. "

http://forums.usfirst.org/showthread...rbonate+glu e

By the definition,
http://www.amazon.com/Weldon-16%C3%A...6515284&sr=8-7

on amazon would work ... there are several glues in the paint section at the local Home Depot that say Acrylic, and I am going to go back and check, but I suspect that somewhere in the description of the Acrylic glues they also say also polycarbonate.

So...
"WELD-ON 16 is especially formulated to bond acrylic plastic. It can also be used for bonding styrene,
butyrate, PVC and polycarbonate, as well as other plastics and porous surfaces."

Does that description of WELD-ON 16 qualify it as a FIRST sanctioned "polycarbonate glue"?

If so, does Gorilla Super Glue qualify as a PVC cement <R92-R> because it specifically markets that it bonds PVC sheet?
"Bonds wood, metal, stone, ceramics, PVC sheet, brick, paper, rubber and some plastics"

Or do we have to replace Gorilla Super Glue with WELD-ON 16 and hope it works?

[VKP]

If a bottle of epoxy says that it can be used for "plastics," will it pass inspection as a polycarbonate glue?

[pfreivald]

CD really isn't the place to ask...

[Joe Ross]

Originally Posted by pfreivald

CD really isn't the place to ask...

Is there a place to ask right now? Q/A is closed, and this doesn't seem like type of question to tweet the refs about.

[pfreivald]

Originally Posted by Joe Ross

Is there a place to ask right now? Q/A is closed, and this doesn't seem like type of question to tweet the refs about.

I hear ya, but it seems a little late...

[Teched3]

Originally Posted by pfreivald

I hear ya, but it seems a little late...

Print out a copy of the data sheet and show it to the inspectors when you go for inspection. You should be OK. Most of these products should be used in a well ventilated area, so don't use in the pit area. Outside application only - fumes fire hazard, etc concerns.

This is directly from the GDC:

01-31-2011, 03:40 PM
GDC
Game Design Committee
$@#
Join Date: Jan 2006
Posts: 2,782
Re: Polycarbonate Glue
Any glue that is marketed as specifically for bonding polycarbonate is allowed per R92-G.

I stand corrected on my original post related to limit switches.

[Retired Starman]

Questions like, "What is polycarbonate glue?" somewhat amuse me. Maybe it's because I have had years of experience doing fabrication while kids are new to the process. So let me explain. This goes for items in the minibot list, like the allowable cements and "household light switches".

Quite specifically, if you go to a commercial supplier of sheet plastic products, on the shelf by the order counter, you will find bottles of glues called "Polycarbonate Cement" and "Acrylic Cement". Such products are what fulfill the definition as listed in the allowable parts list, just as PVC cement is what comes in the can called PVC Cement that you get in the plumbing department of the local hardware or building products store. It's that simple.

This isn't really rocket science, guys. Stop trying to make it difficult. Stop trying to run around looking for loopholes and work within the Game Design Committee limitations on construction. In the real world, those limitations are called "specifications" and they are what the customer pays you to use when you design the project you are selling them.

As a robot inspector, I'll accept any glue which specifically says in its literature that a recommended use is to glue polycarbonate, but if it isn't real polycarbonate cement, expect a big eye roll! And expect to show me that product documentation.

Dr. Bob