Lots of good basic tap info.
I use Safflower oil as you can eat it , hi flash point and good lube quality and not sticky.
Dont like VOC and you get the fluid on your hands.
Evan hand taping includes lots of little details you learn over years of practice.?
Taping simple flats is easy tapping in weird places very tight spots on machine adding components so on this get tricky.
I would not buy a set , buy proper tap for correct job is best.
Mac,,,
Designing and building for 50 years
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On Dec 14, 2020, at 1:45 PM, Cliff Rohrabacher, Esq. <rohrabacher@...> wrote:
?
one more thing
When hand tapping? using a cutting tap or die ( as opposed to a
forming tap or die) Drive the tap in? about half a turn ( or so)?
and then back it out? a half turn (or so).? You will figure this
out? the forst time you do it.? What is happening is? you need to
"Break the Chip" that was forming as the tap or die cut into the
material.?
Backing it off like that? will? do a few things (1)? Replenish
the lube at the cutting? edges, (2) snap that off and make things
progress easier, (3)? it makes it way more possible? to extract a
broken tap and? (4) way less likely? that you will snap a tap.?
On 12/13/20 7:55 PM, imranindiana via
groups.io wrote:
is anyone familiar with accusize industrial tools? it is a
canadian co out of toronto. i recently purchased two tap &
drill sets metric and SAE. i went with them because they offered
HSS at reasonable price.
i used the 1/2-13 tap first time today and it broke mid way
in 1/2¡± CR1018 steel bar. yes, i did drill 27/64¡± hole with the
drill that came with the tap. just curious, folks with metal
knowhow, can you tell if this break shows a manufacturing
defect?
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i
am sure they will send me a replacement tap but i am just
wondering if i should return the set or both sets because i am
not sure of the quality any more.
Imran
