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I have a plastic detail part with a very small piece broken off one end of it - just a millimeter or two. I am sure it would be possible to glue it back on, but because of the very small size, I'm having trouble getting it into position with the adhesives I have tried. What I need is something that is very tacky and stays tacky for quite a while so I can get the thing positioned perfectly and then it will stay there while it dries. I've tried ordinary plastic cement but it doesn't work very well - not tacky enough to hold the piece in position. My experience with cyanoacrylate suggests that it wouldn't work well for this job. I've thought about using yellow woodworking glue, which does have a lot of tack and a reasonable working time, but I've never heard of anyone using it on plastic. Contact cement won't work because it has to be positionable - the piece is small enough that there is zero chance of getting it straight into place without having to move it around. 

 

Suggestions? 

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Originally Posted by Michigan & Ohio Valley Lines:
You could try something like Zap-a-Gap which is a CA.  It is thick...you have enough time to position a part.  Once positioned, hit it with an accelerator, like Zip Kicker and others, that will dry it immediately.  My accelerant is in a spray pump.  For small parts, I spray a toothpick and then touch it to the glue.

thats the stuff i was talking about..each hobby shops calls it a different name and they have the hobby shop names on those bottles..

A photo of the parts would be helpful.

 

For the best results and to maintain your sanity, get the parts in proper position before applying the glue.  Try modeling clay, painters low-tack tape, pins, alligator clips, weights...etc.  The joint area should not come in contact with the support material.

 

The Plastruct, Inc. Cement Guide webpage has great info and tips:

http://www.plastruct.com/pages/CementGuide.html

 

If the plastic cement will not bond, a thin super glue should work with minimal visible residue.

 

Read and follow the product directions/warnings.

 

Matt

I just had this problem. I was using Epoxy and super glue on plastic with poor results.

 

Then I found "PLASTIC SUPER GLUE" made by Devcon (GPRIP-TON-ITE, The latest in super glue technology). Part #30350. (found it at Sears Hardware)         

 

 

 

The package says SUPER GLUE FOR PLASTICS, GRIP-TON-ITE Plastic is a fast setting, semi-thick adhesive that is excellent for bonding plastic and elastic surfaces.

 

It has been working great for me. It has a 15 second hold time and dries clear.

 

Until I found this I had no idea they made a super glue for plastic, and several other people I have told about this glue also had no idea it was available.

 

Good Luck, Casey

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