Any glue stick to nylon?

Question

Hi,here's a question that is not 100% model related, but may be.I have a small white plastic gear (nylon I think) that is pressed on a metal shaft from a motor.  The gear cracked between the teeth so it spins loosely on the shaft when friction is applied.  Any way to glue this gear to the shaft?  I cleaned all of the grease off of the shaft & gear but don't know what kind of glue will stick it together.  Can it be heated & melted to the shaft?let me know.Thanks,Dave

e · Accepted Answer

i've never had luck with that unless the gear moved slowly.if it is high speed, you're sol. i tried ca and epoxy.

A.T. · Answer

Use a fine file or wet & dry sandpaper to roughen up shaft were nylon gear sits as ell as inside of the nylon gear to provide keys for the cement. Use either Stabilit Express or better, visit local dentist and beg for some of the powder and setting agent used to fix denture plates. refer also to = "Plastic Kits, Resin Kits, Photoetch + Plastic repairs" at Alan's Hobby, Model & RC Web Links

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Alan T.

Doug Wagner · Answer

> Hi, > here's a question that is not 100% model related, but may be. > I have a small white plastic gear (nylon I think) that is pressed on ametal > shaft from a motor.  The gear cracked between the teeth so it spinsloosely > on the shaft when friction is applied.  Any way to glue this gear to the > shaft?  I cleaned all of the grease off of the shaft & gear but don'tknowIf you find a workable solution, please post it here. I've had the exactsame problem several times before and could never find a glue that stuck tonylon permanently. The only long term solution I found was with one gearthat had a collar. I drilled a hole through the collar and the axle andpushed a steel wire through pinning them together. The crack in the gearmade 2 of the teeth slightly farther apart, so the CD changer mechanism thegear was in never ran quite as smooth again...but at least it ran.Doug Wagner

Dave · Answer

I found some glue at Home Depot called Liquid nails Perfect Glue 2.  I glued the gear onto the shaft, and held it together with a clothespin until it dried.  Like Doug said the teeth were slightly farther apart where the split was, but so far it has stuck together.  My gear is inside a kid's toy train turntable so so far it works, have not put much of a load on it yet.Dave

Doug Wagner · Answer

Thanks Dave. I 'll have to keep that in mind for next time. I've used plainol' Liquid nails before, and found it to be a hell of a tough glue!Doug Wagner

Any glue stick to nylon?

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