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  1. Fair enough, you want LiFePo4 for safety. ...

    Fair enough, you want LiFePo4 for safety.

    18650 is very common BUT not in LiFePo4 chemistry. Not too many manufacturers, all chinese made, sold with various rebranded names.

    Anything much...
  2. You are beating a dead horse with LiFePo4 16850's...

    You are beating a dead horse with LiFePo4 16850's

    Hardly anybody manufactures 18650 size in LiFePo4 chemistry and most of the manufacturers are questionable chinese brands.

    If you intented to...
  3. IIRC it depends on belt model and make. Some are...

    IIRC it depends on belt model and make. Some are "close enough to match", some others need to have same batch number and rest of them are not suitable for parallel use at all.
    Most (but not all)...
  4. Keyword "if enough people are watching". :D No...

    Keyword "if enough people are watching". :D
    No need to even make several videos per week but you would need to become u-tube superstar.
    Colin Furze is probably making between 1-2 million per year...
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    old chest freezer or "camping cooler"/ice box...

    old chest freezer or "camping cooler"/ice box would solve the insulation part. Needs minimal heating and if fully loaded keeps warm for overnight easily even without nighttime heating.

    Built...
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    I'd avoid really greasy and oily parts. Most...

    I'd avoid really greasy and oily parts. Most rubber parts inside household washing machine are EPDM rubber that has great resistance against acid and bases but it turns to gooey with many common...
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    Generally not any problem but if you push things...

    Generally not any problem but if you push things to limit the smaller shank is not as good. IE: crazy heavy cut, tool overhangs more than usual, bad hair day etc.
    Some hobbyist oriented shops...
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    Somewhat offset screw hole is normal and...

    Somewhat offset screw hole is normal and desirable. That way the screw pulls the insert against toolholder pocket sidewall.

    Plus the insert pocket is wrong shape if you put tcmt insert to...
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    ANSI or inch based system is I.C. ISO /metric...

    ANSI or inch based system is I.C.
    ISO /metric is gludge to approximate cutting edge lenght but it’s not perfect match because the underlying dimensions are in inches and corner radius fools you in...
  10. If you don’t overdo the compressing it should be...

    If you don’t overdo the compressing it should be ok.
    You can safely heat 4140 HT to about 1100F without affecting the tensile strenght and tempering. Pressing the heated ring to smaller opening...
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    Good step drill last certainly longer than 5/8...

    Good step drill last certainly longer than 5/8 total thickness even in stainless as long as you use sensible sfm. But 1.5” final diameter would need suitable drill and strong guy.
    Thickest material...
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    Possible? Yes. Sensible: not unless you are on...

    Possible? Yes. Sensible: not unless you are on Sentinel islands and your life depends on it.
  13. I was thinking more of diamond wheel in bench...

    I was thinking more of diamond wheel in bench grinder where it is about 10 seconds setup and the time is spent mostly repeatedly measuring and sneaking to correct size.
    I have collection of mgmn200...
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    tpac tools looked like good hint. Any experience...

    tpac tools looked like good hint. Any experience with their ER collets?

    In general if you go for cheap chinese tooling at least buy from seller that is specialized in tooling. In my experience...
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    Well done! And big thanks to you for giving us an...

    Well done! And big thanks to you for giving us an update. These threads remain too often without update if solution was found.
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    Not really a Bridgeport job, more like universal...

    Not really a Bridgeport job, more like universal mill with helical milling setup(universal dividing head).

    Muchos fun to set up for one-offsie:
    ...
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    Since this is a clearly academic wanking exercise...

    Since this is a clearly academic wanking exercise you can "easily" thread the s-14 by coupling axis feed and rotary table together with some gears and universal joints.
  18. typical socket would use lot larger corner radius...

    typical socket would use lot larger corner radius and its placed differently:
    https://cdn.shopify.com/s/files/1/0133/1606/3332/products/[email protected]
  19. How many seconds to grind your own from larger...

    How many seconds to grind your own from larger insert.. yeah you needed more than one but less than full box :cool:
  20. Sandvik Corocut XS, P. Horn 274 series.. what else

    Sandvik Corocut XS, P. Horn 274 series.. what else
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    Slow speed, small DOC, gummy material inserts...

    Slow speed, small DOC, gummy material inserts have been covered in dozens of topics previously but here is some starting points:

    -Any old fart here is going to recommend HSS
    -Look for CCGT...
  22. 'Muricans are not familiar with AF stamped on the...

    'Muricans are not familiar with AF stamped on the wrenches since they don't use Whitworth wrench size system :D

    (A Whitworth wrench is sized according to the diameter of the shank of the bolt, not...
  23. I'm guessing you haven't seen the "building code"...

    I'm guessing you haven't seen the "building code" in third world countries. Insurance? Engineer? Certified Welder? Structural steel? maybe on their largest skyscrapers if that.
    OP is residing(doing...
  24. 54 HRC minimum and 60 max on jominy test bar. To...

    54 HRC minimum and 60 max on jominy test bar. To about half inch depth.
  25. This. 300lbs steel chunk to cool the surface and...

    This. 300lbs steel chunk to cool the surface and high energy output cutting torch to heat it fast. 60 HRC on a bad day.
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