Toy Repair

These posts amuse me. You will get a "can't lose" adhesive selection with each response.

To me, "Araldite" is a company name and not the name of a specific adhesive. Could be any number of things, but let's assume it's a polyamide cured epoxy. Sure, go ahead and use it.

The real secret to successful adhesive bonding is surface preparation as much as the adhesive.

Back in my day, we used hexafluoroacetone sesquihydrate to prepare nylon for bonding. Really.

Unfortunately, it's hard to bond thremoplastics with most adhesives, but an epoxy is as good a choice as any. Clean everything after sanding it first.

There's a lot of torque on gears, so I'd not be surprised if it fails.

Give it a try.

If you have all the pieces, you might want to explore making a reproduction of the gear using silicone rubber tooling and epoxy to cast your own gears.

poly zap it....$4

http://www.wholesaletrains.com/Detail.asp?ID=20015559

Most cyanocarylate-based adhesives will come in handy for such tasks. Any home hobbyist would do well to keep small quantities of the following handy:

• General multi-purpose glue, like UHU (usual disclaimer)
• 2-pack quick-setting epoxy resin adhesive for jobs that need space-filling stuff that is also sticky
• Cyanoacrylate (the "super" glues), which only works well on joints where the air can be excluded from the joint
• PVA woodworking adhesive
• Impact adhesive
• Solid-stick-based paper adhesive

With that lot, one can mend most things.

http://www.rushgears.com/

That's going into the favorites!

Me too! That's a great site, and they're still developing it.

sounds like a good excuse to dust off the CNC 5 axis and cut some 2011 aluminum

I like the idea of cloning it in epoxi resin! Easy, cheap... and long lasting!