The Shop > Finishing
sourcing 600 & 800 grit carborundum in the UK
pipemakermike:
Hi John
I already have most grades available in diamond but, a friend who has made a lot of engines is of the opinion that diamond is likely to become imbedded in the bore where as carborundum doesn't. He only uses diamond for finishing a chrome bore and uses a castiron lap for that. Now, I don't have enough experience to know if this is likely to be a problem - any ideas?
One thing that I am sure of is that the quality of the bore and the piston fit are big players in the easy handling of these small Diesels.
krv3000:
HI just my bit your Friend is right diamond will embed itself into soft metals
Fergus OMore:
Surely silicon carbide and carborundum are one and the same?
However, probably what you are wanting is in small quantities and I would suggest that you might contact suppliers to dental manufacturers.
However, there are things like tripoli compound which I know has a 600g and car accessory firms do sticks. I've still got a one from then- a brown grade.
Does this help?
Bluechip:
--- Quote from: Fergus OMore on February 20, 2012, 10:30:06 AM ---Surely silicon carbide and carborundum are one and the same?
--- End quote ---
So it is ... :scratch:
I never knew that. Always thought Carborundum was a sort of Trade Mark ...
Ah well. A bit late now ...
BC
andyf:
--- Quote ---I never knew that. Always thought Carborundum was a sort of Trade Mark ...
--- End quote ---
I think it might be, BC. Perhaps they initially wanted to create an association with corundum (the non-trade name for naturally occurring aluminium oxide), because that too is an abrasice, though not as hard as silicon carbide, of course. "You've tried corundum; now try our new Carborundum, which is much harder" sort of thing.
Andy
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