Solvent adhesives... why don't more people use them? - Page 3

woeful · 03-16-2005, 10:57 PM

can this liquid acrylic uses as glue to glue 2 pieces of acrylic together? btw, where do you get this at? I only saw acrylic glass at home depot

Quote: Originally Posted by dave2

I'll share a couple other ideas.
Liquid plexiglas is a liquid acrylic that you can pour and sets up clear, plus it doesn't need any strengthening material like the fiberglass mat. The reason we use fiberglass with epoxy is that the resin doesn't cure stable, it cracks very easy and only has strength in thick blocks.
Also, MEK methyl ethyl ketone is polyester resin hardener. You can find it at any marine supply shop, along with fiberglass stores and plastic depot, like TAP plastics.
They will also have acrylic sheets and acrylic bonding solvents at TAP, and most of the pourable plastics.

The main reason people use fiberglass and bondo is because they don't pour, they spread. It's very difficult to make a reverse mold that you can FILL with an acrylic or ABS formula where it will come out smooth. It's much easier to sand bondo. That said, you can come up with some cool results using the acrylics.
I've used all of these methods extensively, and if anyone needs help with them, please ask.

dave2 · 03-17-2005, 02:42 AM

It's right in the middle of what you quoted. TAP Plastics. And if you want a lot of the liquid acrylic, they sell it at select products.

Squid · 03-17-2005, 03:39 AM

So your using PVC pipe??? or do they make an ABS pipe? I guess it's the same? dunno..

That Oatey ABS cement looks slick.. you'll have to post your results with that too...

Do you think that you could accelerate the drying of the sludge by using heat?

And for creating shavings, you could use a rasp type file which u could shave the pipe with...

And for breathing protection, I get 3M throw-away respirators for $16 bucks that work awesome...
They are good for about 8~10 hours of organic fumes if not a little longer.. and then come in handy for dust after that.

coachreed · 03-17-2005, 07:26 AM

The white or gray pipe is PVC... ABS pipe is the black stuff... I guess they would both work but if I ever get a scratch in the paint finish of my dash, I'll have a black scratch not a white or gray one...

antimatter · 03-17-2005, 01:23 PM

Keep us posted on your progress.

EsKALad · 03-17-2005, 01:59 PM

lets seee some pictures of how yours turned out..im sure alot of us are curious to how it looks before we begin!

coachreed · 03-17-2005, 05:08 PM

I need to go hit the hardware store to get some bits for my dremel... I'll need to smooth out a few areas, and then build things up in a couple others... I'll try to get some work done tonight and maybe get some pictures posted up tonight or over the weekend... I'll check back in a bit... later!

Randy

coachreed · 03-17-2005, 05:24 PM

Quote: Originally Posted by EsKALad

lets seee some pictures of how yours turned out..im sure alot of us are curious to how it looks before we begin!

I meant to reply to your comment... just for the record, the final product will look no different whether you use the old bondo and glass method or do the plastic... the difference is that most likely if not definitely, the glass and bondo will crack... the plastic won't... as long as your prep work is meticulous... anyway, once I'm done with the sanding and stuff... the paint (if I do it) may not be GREAT as I suck (or at least HATE) painting... lol

Later!

Randy

n8scstm · 03-17-2005, 05:25 PM

This is where I have purchased all my acrylic stuff. http://www.ipscorp.com/ind_html/indprdcts.html
I have used the solvent and it is very strong. Some people will take acrylic chips and the solvent and mix them to make a cement, or you can purchase it in a tube. The problem with this is that the dash and the monitor case are not acrylic. So they may stick but they will not bond. I believe it's more like PP (polypropylene) or PE (ABS/polyethylene), which can actually be welded with heat, but can not be bonded my disolving the material then letting it harden again. You can glue it with some high strength epoxy though. So for the dissimilar materials I think structurally fixing the pieces with epoxy then finishing in either fiberglass (for high fill areas) or bondo (for low fill areas) would be the best method.
Another good source of info on this plastic stuff is http://www.eng-tips.com/threadforum.cfm?lev3=80

n8scstm · 03-17-2005, 05:30 PM

Quote: Originally Posted by Squid

So your using PVC pipe??? or do they make an ABS pipe? I guess it's the same? dunno..

They do make abs pipe. As said, it is the black pipe (not the iron black pipe LOL) at home depot. The difference is that abs (PE or polyethylene) is a thermoplastic meaning it can be melted and therefore, welded to itself. PVC is a thermoset. It can not be melted and used for anything useful except a big stinking glob of melted, burnt dog **** and maybe to get high.

Pestilence · 03-17-2005, 05:47 PM

ABS and PE are two very different plastics also - ABS a lot like PVC with regard to solvents. I keep my dissolved ABS in a PE container. I don't know about your dash, but I'm pretty close to 100% sure my F-150 has an ABS dash.

n8scstm · 03-17-2005, 05:57 PM

Quote: Originally Posted by Pestilence

ABS and PE are two very different plastics also

Very differnet but both are thermoplastics. I read on a site that they were the same but thought it was odd that they said that. Thanks for the correction. The dashes are abs, but what about the cases? I'm not so sure about those. It's not the easiest material to vacuum form. But now that I think about it they probably injection molded them so its possible that they are abs too.

DeltaFX · 03-17-2005, 06:44 PM

Acetone can be used to glue ABS parts that fit tight. Use a toothpick and pour a small drop of acetone. It is more soldering than gluing

coachreed · 03-17-2005, 09:40 PM

I thought I'd try something new... so I thinned my ABS glue down a bit, squirted it on... and then I used a rubber spatula to spread it around a bit... at this point, including chopping up ABS material to mix my sludge, mixing it and waiting for to dissolve, prepping the parts to glue together, making my first application, sanding, making my second application... my total time spent working in this, I bet I don't have more than an hour or so... more time thinking about it than anything... I think as thin as I applied this layer, I can probably do some sanding tomorrow and be nearly done... I might make one more small, thin application, sand, prime and paint... honestly, this has been easier than any other work I've done... and I've been installing car-audio since '90... here are a couple pictures...

TTYL!

Coach

galpd320 · 03-17-2005, 10:46 PM

Any ideas on making large dash panels using this meathod or would it only be useful for peices that fit closely already.

I am looking to make a large panel to mount the LCD flush into the top of my dash, but I don't like the idea of the fiberglass potentially cracking.

User Name		Remember Me?
Password