Attaching acrylic to glass?

[medic29]

I need to attach a couple of overflows I made out of acrylic to the sides of my glass tank. I tried using super glue gel and it felt pretty secure, but after doing a flow test a couple of days ago, today I found the overflows floating in the tank.

Anyone have any idea how to attach the overflows to the tank? Anyone have success doing this?

Let me know.

Thanks,
Rick

[RichConley]

Just silicon them in. It'll be plenty strong enough.

[medic29]

I had them attached with superglue gel, then the next day put silicone around the edges on the inside of the overflow. If I just use silicone, would I put it on the outside? Or could it be that I didn't get the glass clean enough before applying the superglue and silicone?

[RichConley]

clean the glass, put the silicon on the edge of the acrylic, and then press into place. Its important that the silicon is between the acrylic and the glass: Thats where the strength of the bond comes from.

[medic29]

Suggestions as to what I shoudl clean the glass with??? Alcohol? Window cleaner?

[evilsike]

water with little vinegar

[medic29]

Should I avoid alcohol? That is what I would normally use outside of this hobby.

[electric130]

no, there's no problem with using alcohol. that's what i use personally. also, make sure you don't press the overflow so hard to the glass that there's almost no silicone left. i'd leave about 1/16-1/8" of silicone between the acrylic and the glass. after that settles, put a bead of silicone all the way around the box on the inside and outside, just like the corners of a glass aquarium. there was a guy awhile back that did some tests to see what was the strongest bond between glass and acrylic and Weld-on 40 was the best. much better than silicone.

[loganricher]

Anyone know where "weld-on" products can be purchased?

[rodgod20]

weld-on can be purchased on-line or plastic supply shops....google weld-on and you can see the stores

[CPT. MURPHY]

<a href=showthread.php?s=&postid=8531296#post8531296 target=_blank>Originally posted</a> by loganricher
Anyone know where "weld-on" products can be purchased?

I have seen it at both lowes and home depot.

CPT.

[medic29]

When I asked at Lowes and Home Depot everyone looked at me like I had 3 eyes! Wait...do I?

[electric130]

<a href=showthread.php?s=&postid=8531442#post8531442 target=_blank>Originally posted</a> by CPT. MURPHY
I have seen it at both lowes and home depot.

CPT. i've never seen the acrylic weld-ons at either. check the yellow pages for plastics suppliers. or get it from here http://www.usplastic.com/catalog/product.asp?catalog%5Fname=usplastic&category%5Fname=25394&product%5Fid=2273 it's not the weld-on brand, but it's the same chemical.

[rodgod20]

Yeah I haven't heard it coming from Lowes or Home Depot...medic was it possible another brand?

[RichConley]

<a href=showthread.php?s=&postid=8529153#post8529153 target=_blank>Originally posted</a> by electric130
no, there's no problem with using alcohol. that's what i use personally. also, make sure you don't press the overflow so hard to the glass that there's almost no silicone left. i'd leave about 1/16-1/8" of silicone between the acrylic and the glass. after that settles, put a bead of silicone all the way around the box on the inside and outside, just like the corners of a glass aquarium. there was a guy awhile back that did some tests to see what was the strongest bond between glass and acrylic and Weld-on 40 was the best. much better than silicone.

If the silicon is done correctly, you'll break the tank before the overflow comes off (personal experience).

Weldon 40 is like $50.

[DrHank]

Silicon is definately the way to go!

[gregbot9000]

dont mean to steal the thread, but what about attaching pvc to glass?
would silicon work for that as well?

[Norboo]

<a href=showthread.php?s=&postid=8531442#post8531442 target=_blank>Originally posted</a> by CPT. MURPHY
I have seen it at both lowes and home depot.

CPT.

I have been to every Home Depot and Lowes within 50 miles radius from me. I have never seen it there. Trust me, they both don’t carry it.

Here is a place for Weld-On and all the things you will need to apply weld-on:

http://www.tapplastics.com/shop/category.php?bid=21&

[NanoReefWanabe]

could someone clearly post the name and brand of silicone used for there reefing purposes...

as i almost made a grave mistake of using Kitchen and Bath Silicone I from GE (yeah the mold and mildew resistent one) apparently that is not good stuff for the fish and inverts..

So what should i be using?

[Norboo]

<a href=showthread.php?s=&postid=8533007#post8533007 target=_blank>Originally posted</a> by gregbot9000
dont mean to steal the thread, but what about attaching pvc to glass?
would silicon work for that as well?

Depends how strong do you need them to bond? But in general, yes, you can use silicone.

[Norboo]

<a href=showthread.php?s=&postid=8533185#post8533185 target=_blank>Originally posted</a> by NanoReefWanabe
could someone clearly post the name and brand of silicone used for there reefing purposes...

as i almost made a grave mistake of using Kitchen and Bath Silicone I from GE (yeah the mold and mildew resistent one) apparently that is not good stuff for the fish and inverts..

So what should i be using?

GE Windows and Doors Silicone II

[CPT. MURPHY]

<a href=showthread.php?s=&postid=8533181#post8533181 target=_blank>Originally posted</a> by Norboo
I have been to every Home Depot and Lowes within 50 miles radius from me. I have never seen it there. Trust me, they both don’t carry it.

Here is a place for Weld-On and all the things you will need to apply weld-on:

http://www.tapplastics.com/shop/category.php?bid=21&

Sorry, should have specified. I have not been to every lowes and home depot in the country results may vary.

CPT.