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IIRC Guy Lautard recommended Crisco for reaming (but maybe also wrapping the reamer in waxed paper?).+1 on the crisco, works great with stainless on lathe, mill, bandsaw, love the way it melts in
IIRC Guy Lautard recommended Crisco for reaming (but maybe also wrapping the reamer in waxed paper?).+1 on the crisco, works great with stainless on lathe, mill, bandsaw, love the way it melts in
IIRC Guy Lautard recommended Crisco for reaming (but maybe also wrapping the reamer in waxed paper?).
Lard oil ok, but I'd guess lard is a solid at room temp like bacon fat and crisco. but what makes Crisco so darn good is that its a solid. it globs where you put it and melts as you cut so it has a stick around and cool it down property all it's own. and as said, it's not animal based and does not stink up the jointThe Machinery's Handbook suggests a mixture of Mineral oil and lard oil.
"For light machining, straight mineral oil may be satisfactory; for heavier duty or where the metal is removed ay comparatively high rate; the mineral oil may contain from 10-40% lard oil. As a general rule, the percentage of lard oil is increased with the hardness of the stock to be removed."
So I can see Crisco being a good choice.
The best for steel or brass is dark threading used by plumbers {note dark may stain brass} .I was wondering what type Of Cutting Oil is correct. Not even sure if my process is correct, but it seems to work. I’ve tried plain motor oil and seems to work, but goes on thick. I’ve also tried various machine oils. Even Synthetic Turbine Oil, I like this the best. Has good consistency and doesn’t make much mess. Here is what I’ve been using in no particular order, applied with a small brush.
Kroil
Mil Spec Synthetic Turbine Oil 7808
Motor Oil 5W-30
PB Blaster
WD-40
Chain oil (Only because I got a case free from a neighbor who was moving)
drawing a blank on IIRC- ??
Thanks for filling in for me (I was getting my beauty sleep - need all I can get)If I Recall Correctly
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does not stink up the joint
@toprecyler explained for me, but in this case IDRC (I Didn't Remember Correctly - new acronym): couldn't find Crisco or Waxed Paper in my TMBR Index (The Machinist's Bedside Reader - get the set, Vol 1 has been reprinted and is available on Amazon; the others are on the used market, but can be pricey). I'll keep looking (Brownell's Gunsmith Kinks and other sources) and report back.drawing a blank on IIRC- ??