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  1. #61
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
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    71
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    Quote Originally Posted by gazza2009au View Post
    ebay sellers are quoting 12 days shipping from SA to Sydney
    Is that from Ozemestore, in Pt Adelaide???? If it is, good luck keeping an edge on the "HSS"
    I found it was only marginally better than Mild Steel, unless they've got it from a different supplier.
    I put anything from that place in the same category as their lathes and mills, CRAP, would be the only thing that comes to mind that's allowed on this Forum.
    Kryn
    To grow old is mandatory, growing up is optional.

  2. #62
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
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    1,836

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    Bugger, any idea's where to order the hss blank tools? Hare and forbes does a 3 pack but they are 8mm my machine takes 6mm that is a far amount of grinding

  3. #63
    Join Date
    Oct 2015
    Location
    melbourne
    Posts
    473

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    https://www.machineryhouse.com.au/L0003

    Is 1/4. Pretty close to 6mm

    Also have other sizes from 1/8"



    Russ

  4. #64
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
    Posts
    1,836

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    Thanks Russ from memory i bought a pack of the 8mm before for my toy aluminium lathe so i dont know if they were ok says on h&f made in India, India is a poor country but do they actually make a quality product? I'm thinking China quality here but please correct me

    Cant really compare my toy machine to my mini machine 24watt motor to 250watt motor so the toy lathe would never blunt a tool in its whole life

  5. #65
    Join Date
    Sep 2012
    Location
    York, North Yorkshire UK
    Posts
    6,439

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    Hi Gazza, Guys,

    Gazza I know you are keen to make chips, but take a few moments to consider what you have and what you need. I've collected much of the HSS cutting tools I have, from scrap bins, scrap yards, old drills and broken taps, all very useful. Buying a grinder is the first step to making your own lathe tools. That chart that Dave posted is a very useful one. At a glance you can see the tool shape that you need for a particular cut ! Avoid using carbide your lathe really doesn't have the power to usefully use them.

    Having to use shims can get to be a pain in the neck, I know because that is what I used to do. I would collect a stack of shims for a particular tool and fasten them together with an elastic band !

    Not any more I made a Norman Patent tool holder for my lathe, and wish I had made one years ago. No more prating about with shims. I did a write up a while back, its on here somewhere. You can make it to use any size tool blank. Mine is 1/2" inch, 13 mm if you want metric.

    To go with that a proper grinding rest for your grinder and then you can grind your tools accurately. Search for Harold Hall, he has a lot of very useful things on his web site, including the grinding rest.

    Whilst I remember, the parting tool only needs to stick out just over half the diameter of the work. If its too big to part then get the hacksaw out and clean off on the lathe with a facing cut. Don't try and part to a depth of more than three times the blade width. A 1/2" blade 1.5" inches deep.

    Lots and lots to learn it takes time.
    Best Regards:
    Baron J.

  6. #66
    Join Date
    Dec 2007
    Location
    Adelaide
    Posts
    574

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    I've got one of those Supercheap $30 grinders and in all honesty I would not recommend getting one as your main grinder - they are quite under powered and bog down very quickly once you put a bit of pressure on the wheel to shape the tool, they are really only good for touching up a slightly blunt tool and twist drills, my main grinder is a 200mm grinder and this is the one I use for lathe tools I only use the small one to touchup a tool that has lost it's edge. If you keep an eye on gumtree you will eventually pick up a used half decent grinder for around the same price, I would not go below 150mm.

  7. #67
    Join Date
    Jun 2011
    Location
    Australia east coast
    Age
    71
    Posts
    2,713

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    Quote Originally Posted by familyguy View Post
    I've got one of those Supercheap $30 grinders and in all honesty I would not recommend getting one as your main grinder - they are quite under powered and bog down very quickly once you put a bit of pressure on the wheel to shape the tool, they are really only good for touching up a slightly blunt tool and twist drills, my main grinder is a 200mm grinder and this is the one I use for lathe tools I only use the small one to touchup a tool that has lost it's edge. If you keep an eye on gumtree you will eventually pick up a used half decent grinder for around the same price, I would not go below 150mm.
    Agree. I've a 200mm grinder with linisher on one end, it gets all the rough work. A smaller 150mm grinder with white wheels gets used to touch up/resharpen the HSS tools. It's a bit gutless but fine for that.

    PDW

  8. #68
    Join Date
    Dec 2013
    Age
    56
    Posts
    1,416

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    Here are some on ebay already sharpened and ready to go. If you buy these you can see how there sharpened and copy on other HSS blanks.
    If I remember right, this seller always sold good gear
    Using Tapatalk

  9. #69
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
    Posts
    1,836

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    I went to super cheap to pick up one of those $30 bench grinders i think it works ok u need to be putting a fair amount of force on the hss tool to slow the motor right down and than the little hss tool heats up within 7 seconds and needs a dip but bloody hell is it repetitive i was there forever trying to make a new tool i got the and just extended one of the cut off tools that came with my lathe and i resharpened it

    i just remade the first wheel spacer and with my hole drilling in the center i just missed my sixteen mil depth by about 1.5mm bugger!!! so once i cut the part off i was left with the back over the wheel spacer which i had to put back in the lathe other way around and dicked it, it is still usable just not a 100 percent good finish about a 80 percent effort i ...... up again hopefully wont do it again

    here is the first right to left tool i cut from a new piece of hss i bought from hare and forbes these hss bits seem to be ok it didn't go blunt it stayed very sharp after i was finished, the tool is laying on its side its actually a right to left tool i need to make a left to right one soon for facing

    the other pictures show i had 19mm stick out of the cut off tool, my tools are six mm (number six doesn't work on my keyboard) so 3 times the stick out 18mm i went over by 1mm, it shows the cut off tool cut right thru almost 28mm thickness of material i had next to no chatter because i took the advice from you guys and kept the tool close to the chuck
    Attached Images Attached Images

  10. #70
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
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    71
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    You can see the difference with using a decent HSS.
    Welcome to a long learning curve of machining.
    Kryn
    To grow old is mandatory, growing up is optional.

  11. #71
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
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    That wheel spacer in those last pictures on the tail stock was a bad cut it was one i done yesterday or the day before and turned it around put it back into the chuck i'll show todays effort when i do one more

    getting really tired of remembering numbers not as in annoying but as in repeating the dial number so i know how much to take off on the next pass if its not to the zero

    think i need to put calipers on the lathe

  12. #72
    Join Date
    Dec 2013
    Age
    56
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    It doesn't look like you have much back rake, if you look in the picture of HSS bits I posted you can see they all have it. With more back rake it shaves the material off like a chisel, aluminum especially likes more back rake.
    Using Tapatalk

  13. #73
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
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    This afternoon's effort is done i buggered that small piece the aluminum kept pulling out of the chuck while i was facing it not sure why i had 1:1 in the chuck and what was hanging out i had to drill my center hole than go up in drill bit size than come back to finish facing it once it had minimal amount of face left on the aluminium i tried using the tool cross to the bed and inline with the bed both methods kept chucking the job out of the chuck i still dont know which way to face but i manage

    tomorrow are the last 3 pieces how will i cut 39mm deep into that one long piece with only a six mm tool? do u think i should machine it down to OD size than cut it off to length place it back in the chuck than try machine the hole? what will be the best way i have no clue hope you guys can offer advice

    Thanks Dave i will take a look at some more pictures and see where i can improve i know i have a lot to learn about making the tools
    Attached Images Attached Images

  14. #74
    Join Date
    Jan 2019
    Location
    Adelaide
    Posts
    78

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    Save your money and buy an AL-50, better known internationally as a 9x20. Good small lathe and they pop up frequently second hand on Gumtree.

  15. #75
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    Aug 2009
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    Sydney, NSW, Australia
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    4me your shout? There is nothing wrong with my lathe i spent 4 hours on it this afternoon absolutly mad little machine its doing everything i ask of it or expect it to do

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