Not a cabinet repair, but may be useful info for anyone dealing with polycarbonate.

I recently was asked to repair a music stand whose black polycarbonate tripod type base had one of its legs snapped off. As these stands aren't cheap, and it belongs to a cash-strapped school, I agreed to give it a go.

The product I used is Devcon DS-220 Plastic Welder, made in the USA. This stuff stinks like nothing else on earth. The packet warns about numerous potential issues including the fact that it contains known carcinogens. It also warns not to inhale it (good advice!)

It's a two part adhesive and comes in dual syringe-type tubes like Araldite.

It stays workable for around 5 minutes, then quickly sets. The packet says the bond reaches full strength after 24 hours. Actually I left it until the smell went away entirely, which was more like 3 days.

Result: a very good bond indeed.

Where did you buy yours from, the prices have a very wide range, is this the one ? I'm very interested as I have a similar situation.
Devcon Home - Plastic Steel Epoxy 2500 psi Strength - 56g

Where did you buy yours from

Blackwoods in Sydney. It's not cheap at $17 for an ounce, though a little bit goes a long way. There were cheaper sources but they no longer stock it.

https://www.blackwoods.com.au/adhesives-sealants-fillers/adhesives-sealants-multi-purpose/plastic-welder...

Make sure you rough up the surfaces to allow the glue to seep into the poly.