Its really a question of time and money - anything can be done my a good fabricator - possibly not the first time around though - it may be worthwile to find a decent welder that could tig that existing basket back together in the short term.

I have an SM blank basket being adjusted smaller (hopefully) by my engineer to fit the isomac - could not find a blank locally, and I really don't know if one is even available - so that I can measure pressure under flow.

If Camper can do it, then I see no reason why you could not get the isomac basket smaller using a similar technigue - but the depth may require a naked portafilter (then you may as well machine it a tiny bit bigger to fit readily available baskets - unless there is another basket that is a better fit - I seem to remember that Breville make a small basket too - I have a friend with one, will see what size it is and measure up that too if it is close.

Manualworker

What about trying a whole Isomac pf in the machine - just to see if it works rather than machineing the existing one - it might be that you could machine the Isomac one to fit the machine - this makes better sense to me, rather than destroying an original.

Looks like the ears of the pf on your one are a lot longer.

Isomac ears are 5mm deep on the narrow side, 5.4mm on the thicker side, 17mm long

Internal diameter is 55.6mm, external 59.6mm (ex ears)

The ear is approximately 2mm from the rim

or probably worth to watch arin at german ebay, there's currently one up for auction there. I don't know the market for this machine but who knows it may be as just good as machining the PF.

ManualWorker,

Have you considered getting the existing basket repaired? It will require and expert welder but I think it can be done. Another possibility is if you can find a filter that has a similar size filter section. Cut off the bottom of both filters and weld the good one onto the bottom of the one that fits your machine.

Good luck
Geoffrey