- Thread starter Brad93
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Brad93
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I’ve done a few of the calculators online but they’re all giving far higher speeds and feeds than the clarkson book. It’s a clarkson cutter so I think I’ll go with that data.
pressbrake1
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Might have a carbide clear out soon
I no longer use hss unless a special type of cutter or ally
I no longer use hss unless a special type of cutter or ally
Brad93
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Let me know I’ll certainly take some of your hands $$
addjunkie
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If it fits in the collet and holds securley, I use it. In a perfect world you would have all the correct bits to match, but most of us dont live in a perfect world.
As for cutting cast dry, I agree, but cooling hss tools extends their life massivly on any metal.
pressbrake1
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The main reason why wet coolant is avoided on cast iron is the nasty paste it can produce rusting into a solid and driving the fine dust into places where wear can be caused
Turn your speed down and use a vacuum cleaner to keep dust down
Turn your speed down and use a vacuum cleaner to keep dust down
Brad93
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yep I covered all the ways. Couldn’t find the vacuum but have since found it. When I’ve done cast iron on the lathe I’ve always covered everything and vacuumed and that catches the worst fine dust, good clean after and there’s no issues. I actually really like cast iron on the lathe. The surface finish you can get is brilliant.
Brad93
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Right another expensive morning.
I have ordered x10 Korloy inserts and a 16mm and a 25mm indexable End Mill to use them in.
Plus I have ordered a couple of new M42 threaded clarkson endmills, not particularly expensive, £6 to £14.
Has anyone tried Powder Metal end mills. I believe they fall somewhere between HSS and Carbide, in both performance and price?
I have ordered x10 Korloy inserts and a 16mm and a 25mm indexable End Mill to use them in.
Plus I have ordered a couple of new M42 threaded clarkson endmills, not particularly expensive, £6 to £14.
Has anyone tried Powder Metal end mills. I believe they fall somewhere between HSS and Carbide, in both performance and price?
scottmk1
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addjunkie
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With your tool fetish you will never have any money, workshops are an expensive addiction somewhere between hookers and cocaine.
Brad93
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I think the hookers and cocaine would be cheaper!!!
addjunkie
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Like most things thatll depend on the quality and location of manufacture
Brad93
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As said M42 is a grade of tool steel.
I think HSS-Co is classed as M42. Not sure if that’s 5 or 8%
Matchless
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Last time I withdrew a lump of cash in Barclays they asked me what it was for, my reply was as above, they said they could not put that in the book, reply was well then don't ask stupid questions!
addjunkie
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Should have offered to bring them pictures next week!
Brad93
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Cast iron steady machined. Happy with the finish. I took it down in passes then gave a 5 thou climb cut. I was getting a poor finish conventional.
