Mazak cannot be welded, its melting point is far to low. It can be soft soldered I understand, but have never tried, or needed to myself.

I don't believe you will weld mazak in the way welding works – ie fusing the metal by melting at the joints, often using a filler to build up the joint. Filling with a braze type of filler is possible by careful selection and careful temperature control, but brazing is not welding – just higher temperature than most soldering.

Mazak is just what it is-a cheap diecasting material, often susceptible to expansion if stored in damp conditions.

In theory it should be possible to weld it, if you can find a way to create a weld pool without the heat just melting the whole thing. You could cast up some sticks of mazac for filler metal.

The trouble is it melts at such a low temperature it will be hard to get the sharp temperature gradient usually involved in welding.

Perhaps a micro Oxy-propane set or a small carbon arc would provide a localised enough source of heat.

I would go with the Lumiweld suggestion, it's probably more strong and stable than Mazac.

Neil

Just be prepared to catch the puddle of molten Mazak, it happens quickly !

You might try one of the really low temperature 70deg alloys as a filler ?

I rebuild SU

Is that SU carbs?

My post should have said never rebroken any of them. Seems I type too fast also.

Bri