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cracked plastics

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Old 04-01-2007, 03:13 PM
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cracked plastics

can any one tell me how to fuse my plastics back together?
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Old 04-01-2007, 03:38 PM
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Bondo + sanding + primer + paint + clearcoat.
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Old 04-01-2007, 06:36 PM
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Do a google search on "plastic welding". It's not easy. If you have old fairings to practice with that'd be the route to go.
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Old 04-01-2007, 07:09 PM
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I use a product from Fusor called high strength plastic adhesive.Its the same thing i use in my body shop for repairing bumper covers for cars.If you follow the instructions it makes for an excellent repair.I used it on my plastics and it works great.Any store that sells automotive paint and supplies should be able to get it for you.Are your plastics cracked or are they in pieces?
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Old 04-01-2007, 09:09 PM
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Cracked Plastics

Harbor Freight sells a plastic welder online for under thirty bucks and also sells plastic material sticks -here's a link:

http://www.harborfreight.com/cpi/cta...emnumber=41592

Although I'm going to look into the Fusor product Dpenix mentioned, sounds like a good way to go since I recently found a crack when I took off a fairing to doi some fork work.
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Old 04-02-2007, 04:55 AM
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Thank you for all your information. think I'll look in to dpenix76 idea first. I've already tried bondo and JB weld and both of them didn't hold.
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Old 04-02-2007, 08:02 AM
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I snapped off the top of the front fairing right at the mirror bolts. Got some plactic glue at Lowe's in one of those hypodermic-type plunger things that mixes 2 components together.
Squirted the stuff out & mixed it up & dabbed it onto both surfaces heavily w/ a putty knife. Let it sit a couple minutes, then joined the pieces together. Held them together for about a minute... was surprised they stuck together when I let go!
24 hours later I put it on the bike after carefully grinding off some of the excess w/ the Dremel. Bolted on the mirrors & snugged 'em down... been good for the last 9 months.
Think i can get the name if you're interested.
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Old 04-02-2007, 08:05 AM
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Originally Posted by L8RGYZ
I snapped off the top of the front fairing right at the mirror bolts. Got some plactic glue at Lowe's in one of those hypodermic-type plunger things that mixes 2 components together.
Squirted the stuff out & mixed it up & dabbed it onto both surfaces heavily w/ a putty knife. Let it sit a couple minutes, then joined the pieces together. Held them together for about a minute... was surprised they stuck together when I let go!
24 hours later I put it on the bike after carefully grinding off some of the excess w/ the Dremel. Bolted on the mirrors & snugged 'em down... been good for the last 9 months.
Think i can get the name if you're interested.
Sounds good. I might have to do that.
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Old 04-02-2007, 06:49 PM
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Bondo has no value as a structural agent.It is strictly a cosmetic agent.There is another bumper repair product made by SEM.It may actually be better than the fusor product as you have to have a special caulking gun for the fusor.If you will drill small holes on each side of the crack for the adhesive to go in,your repair will be much stronger.
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Old 04-02-2007, 07:17 PM
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http://www.sem.ws/product.php?product_id=241

http://www.sem.ws/tech_sheet/QS50%20TDS.pdf
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Old 04-02-2007, 07:31 PM
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Thank you.
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Old 04-02-2007, 09:05 PM
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Originally Posted by dpenix76
Bondo has no value as a structural agent.It is strictly a cosmetic agent.There is another bumper repair product made by SEM.It may actually be better than the fusor product as you have to have a special caulking gun for the fusor.If you will drill small holes on each side of the crack for the adhesive to go in,your repair will be much stronger.
Oh? That's interesting. I never knew that (about bondo).
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Old 04-02-2007, 09:15 PM
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Plastic semi-weld.

Drill out the end of each crack then widen the crack with a dremel. Rough up the backside 1 1/2" all the way around the cracks so the semi-weld has something to grip to. Sand and paint. You shouldn't need any body fill. if you need to build up more just let it dry and rough it up before the next application.
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