loctite

josh · Post by **josh** » Thu Nov 22, 2007 8:51 pm

hi

in the new version of boo my aluminium tubes that hold my motors are threaded in the end with an m10 die that screw into my polycarb chasis but these will vibrate loose. does anyone know how loctite reacts to polycarb will it stick or more importantly will it crack or make my poly brittle?

thanx
josh

Post by **BeligerAnt** » Thu Nov 22, 2007 9:45 pm

I assume you mean thread-lock. Loctite make a range of them, as I recall the red ones are permanent, the blue ones allow the bolts to be undone with hand tools but stop them vibrating loose.

All of the Loctite threadlocking datasheets are available here.

The datasheets should give details of material compatibility. I think most are designed for metal-to-metal contact. They may well cause stress fractures in plastics.

An alternative may be to use star washers, as long as you have two flat mating faces to sandwich the washer between.

HTH

Simon Windisch · Post by **Simon Windisch** » Fri Nov 23, 2007 12:24 am

I used Loctite once and it killed the polycarbonate.

Simon

Post by **BeligerAnt** » Fri Nov 23, 2007 3:29 pm

Yes, but Loctite make about 30 different types of thread-lock.

However, I suspect the commonly available ones are for metal-to-metal use.