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Type: Posts; User: Richard P Wilson

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    By all means google speeds and feeds but unless...

    By all means google speeds and feeds but unless you are using modern heavyweight machines halve what you read, probably even more for feeds.

    I'd be running 180mm dia EN9 at about 30rpm for HSS and...
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    Put it in dishwasher?

    Put it in dishwasher?
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    I don't know what lathe you are using but be...

    I don't know what lathe you are using but be aware that any published figures for cutting speeds tend to assume the use of large modern, very rigid commercial machines, or machining centres. You...
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    400rpm on 180 dia? Thats about 700 sfmp cutting...

    400rpm on 180 dia? Thats about 700 sfmp cutting speed! As dalee100 suggests you need to be at 60-80 for HSS or about 120-160 for carbide, translating 30-40 rpm for HSS, 60-80 for carbide. No wonder...
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    Hmm It appears that EN9 is a straight carbon...

    Hmm
    It appears that EN9 is a straight carbon steel, carbon content 0.50 - 0.60%, described as good for gears, sprockets and cams. Machinable, but to give you an idea, if leaded steel machinabilty is...
  6. First thing what equipment are you using?...

    First thing what equipment are you using? Drilling machine. milling machine with or without DRO, or lathe? What accuracy in position do you need?

    Simplest way is to mark out the hole position and...
  7. Just about every Model Engineering show in the UK...

    Just about every Model Engineering show in the UK will have at least one pristine Quorn with all the accessories, in a fitted wooden case.
    Its a challenge to make, and anyone who does so can be...
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    I'll still stick to it being a 5 1/2 MT spindle...

    I'll still stick to it being a 5 1/2 MT spindle adapter.
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    Thanks Willy. Decidedly a character, but possibly...

    Thanks Willy. Decidedly a character, but possibly one best experienced at a distance.
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    You might at least tell us the name of the guy,...

    You might at least tell us the name of the guy, so us poor SOBs outside the US can at least look him up ourselves if he was such a character.
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    Its not unknown for lathe manufacturers to make...

    Its not unknown for lathe manufacturers to make the taper in the spindle nose an odd ball to suit whatever they've bored the spindle to
    5 1/2 MT is quite common for a number of makers.
  12. Be careful shearing stainless. It gives a nice...

    Be careful shearing stainless. It gives a nice rounded edge on one side, but the other side can be super sharp. When I worked on contracts involving stainless roofing sheets, the roofers hated the...
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    Stuff like that with just a light coat of rust, I...

    Stuff like that with just a light coat of rust, I soak a kitchen scouring pad (plastic, not metal) in oil and rub them over with that. Theres a bit of patina left, but thats no harm.
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    No, he bought the mill. He passed on the lathe...

    No, he bought the mill. He passed on the lathe that the seller had as well.
  15. If its proving so difficult, do you really really...

    If its proving so difficult, do you really really need to separate them?
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    Oh No! Rollies Dads Method comes galloping over...

    Oh No! Rollies Dads Method comes galloping over the horizon! Duck for cover!
  17. Tony Griffiths warns against splitting a Boxford...

    Tony Griffiths warns against splitting a Boxford bed from its cabinet because when originally assembled the factory used a sealant to prevent coolant from leaking into the cabinet. With time this...
  18. Right!

    Right!
  19. I understood the OP to mean that the bearing...

    I understood the OP to mean that the bearing shell was a little rough, and should he scrape it? He'd also need to polish the spindle.
    Could have been more clearly expressed I suppose.
  20. Just in case someone thought that 'ten...

    Just in case someone thought that 'ten thousandths' was 10 x 0.001, = 0.01"
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    Another way is to tie the front and back of the...

    Another way is to tie the front and back of the belt together with a piece of rope, as tightly as possible, increasing the grip of the belt on the pulleys. Then with a piece of bar across 2 of the...
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    Hmm. I'm not convinced about blowing hot air up...

    Hmm. I'm not convinced about blowing hot air up the spindle bore. Seems to me that would just expand the spindle and make the chuck even tighter. Possibly hot air on the backplate, but thats a big...
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    Does the spindle have a collar visible between...

    Does the spindle have a collar visible between the backplate and the bearing housing? If so, you could try drilling a blind hole into the collar and making a Cee spanner to fit. Worst case scenario...
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    Maybe shouldn't be talking about machine tools...

    Maybe shouldn't be talking about machine tools and strong drink in the same thread? They don't mix IMHO.

    Nothing wrong with talking about fries though, those Belgian ones bought off a street stall...
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    All of mine have 2 dimples 90 degrees apart,...

    All of mine have 2 dimples 90 degrees apart, thats 45 degrees either side of the split.
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