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Recent content by Limy Sami

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    machining small pulleys. Need to center 2mm holes accurately

    Yeah, my crystal ball is in for service.
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    machining small pulleys. Need to center 2mm holes accurately

    One of my old mentors would say ;- Drilled holes are great, ............as long as you're not fussy as to their postion, straightness, roundness or size
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    Ot...ship hits bridge

    Typical Trump election tactic .
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    LUTHY LF 10 Swiss milling machine ( schlablin,maho,aciera ) type

    FYI http://www.lathes.co.uk/luthy/
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    Major Rusting Issues In Our Building All Of A Sudden??

    That'd do it, and how.
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    Major Rusting Issues In Our Building All Of A Sudden??

    Another thought ;- have you been machining cast iron? .......it can produce very fine airborn particles can rust other stuff easily, which would be an addition to any acids you have
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    browning or boston gear are they still making gears ?

    Any help ? Logan Actuator Co at https://www.lathe.com/
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    Press fit changes trueness?

    What about a heat shrink fit? ............... less stress in the actual fitting, and if heated gentley and uniformly, should keep distortion to an absolute minimum.
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    Press fit changes trueness?

    Faced with that situation I do this. Turn up a ''tube'' to bore of which is a sliding fit - (as in with no chance of snagging) but not loose, with the end machined true to the bore, ..and use that as a pushing sleeve - preferably against the face needing to be true.
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    Starrett goes private

    After they've off shored production to China or Vietnam, pushed prices up and up, ripped the guts out of the company, sold off any viable assets while at the same time taking massive ''management fees'' Not much of a future.
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    Part Conveyor Belt Replacement

    Go wider and slit it down to wirdth - IIRC that's basically how most ???? are made.
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    Can You Help Me With Fairing an Inside Non-Circular Curve in 1/8" Soft steel Plate?

    For one offs, pin them down to shaped pieces of wood you can grip in a vise and files & emery cloth, or a slack of belt grinder.
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    Milling 75A duro polyurethane sheet?

    They're straights Terry, I meant down cut like these https://www.onsrud.com/Series/SolidCarbide1-2FluteDowncutPlastic.asp Only in a home freezer but it being summer and the fixture plate Alu, it made next to no difference
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    Milling 75A duro polyurethane sheet?

    In short it's a PITA material to m/c I used YG uncoated HSS (they're almost ''wear gloves to change'' sharp) with a degree of success, but found Onsrud down cut router cutters better. I stuck the parts down with double sided scotch tape, and didn't cut through - left about 10 - 15 thou and...
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    Oilfield drill collar question

    I've never done a drill collar but have done a fair amount of HT etc steel repairs ** with stick, and the only successful method was lots of pre heat - let it really soak in, and a slow cool. ** Lemken laminated plough mouldboards were fun - I used to do them in batches by building a fire...
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