Plastic welding

[Roksan]

Two vanes have broken off the motor fan blade on my air compressor.
I tried to glue them back on with a two part epoxy resin adhesive. This appeared to work but the two vanes came off when I ran the motor.

Has anybody got any suggestions as to how I might weld these two vanes back on (suitable plastic weld adhesive/solvent)? I also have a gas soldering iron with a small 'blow torch' type attachment. Has anyone successfully used one of these to weld plastics? If so, any suggestions as to where I might obtain plastic welding rods?

Thanks in advance for any help or advice offered.

 

[gcol]

Can you not get a replacement fan blade from the manufacturer?

 

[Roksan]

Didn't have any luck with the manufacturers website - they don't appear to be too interested in after-sales support. I will try and dig out the paperwork that came with the compressor to see if there are any contact details.

 

[oilman]

Electric motor or internal combustion?

 

[Scrit]

Different types of plastics require different types of "glue". For example the stuff I use on acrylics and acrylic/poly co-polymers (as used in solid surface worktops) is a 2-pack isocyanate, but it has only low mechanical strength. Other types of plastic (most notably PVCu) can be glued using a solvent cement. Without knowing which type of plastic your fan blade is it's impossible to even start guessing. Do you know if it is a nylon, polyethylene or something harder?

Scrit

 

[eggplant]

I'd relly look into getting a new one, if you glue it, chances are it wont be 100% straight and blanaced therefore causeing it to wobble, which will in turn stress the bearings and potentially cost a lot more than a fan.
Not much help lol but thats my feelings on the subject.