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Hi Thanks for the refs. A more strict routine of extractor checking/maintenance and shop floor cleaning is going to introduced.A friend told me I'm making "Thermite" when the Al and Fe shavings mix. So, the metals are going to be separated to another work area. Cheers.

Hi I have been informed that my one workshop where the finishing touches are done to aluminium brackets, plates, etc should be seperated from the mild steel parts. Finishing refers to filing, cutting, grinding and drilling to the final specifications. The hazard is the accidental ignition of...

Hi handleman No offence taken. I know about the liability of workplace accidents, but I'm going to make one anyway just to try out myself. The production joint is going to come from a local engineering firm that uses the joint in truck engine hoists. Thanks

thanks arto, but I prefer build to buy - money is a factor here. Artisi - salvaged wheel bearing + parts + clevis pin + 2 x 5mm flat plate = swivel joint. Interesting, I'll give it a try. My two other bearing designs failed due to contamination and stess. Thanks.

Hi I suspend large metal objects ready for spray painting from a beam using chains, S-hooks and U bolts. The #1 problem is that the painter has to move around the object during spraying, instead of being able to rotate the object around on one axis. Problem #2: the joint must be able to take...