Go to the interview, for practice if nothing else. There could be any number of reasons for mass exodus, maybe the new manager expects everyone to work and their old manager didn't.
Cockroach,
You missed the first line of the first post.
"...thread forming ...(not to be confused with thread cutting...)"
Your 3/8-16 needs a .3445 dia. for 75% thread.
This corresponds to a 8.75mm drill size.
Of course 4mm is too small to pierce 8mm thickness, I admit to unintentionally ignoring that fact with my reply.
If it ends up helping with locating, at least it helped some.
3/8 coarse is 16tpi -recommended drill dia. is .312"
3/8 fine is 24tpi -recommended drill dia. is .332"
You're probably already too big for coarse, fine thread would be better anyway.
i don't know off hand about the torque values, but if the 8mm was good for 160 in/lbs you should be fine.
The required usable thread depth + the length of partial thread on the tap (depends on type of tap and possible manufacturer) + the length of drill point (depends on diameter and angle) + a thread or two for "safety".
Best to make your own chart based on your answers to the variables above.
mrbike,
I believe you wanted to start a new thread, not add to this one.
You do so by "going back a screen" to where you see the list of threads in your topic of choice, then scrolling to the bottom where you can "start a new thread".
It looks suprisingly like where you did post, but that...
I should add that our Suginos have 6000 RPM spindles and we generally would run 4 or 5 passes and probably 10 IPM to get through the same plate. Actually we'd prefer to run it somewhere else.
I don't know about routers nor how their 2.5 hp spindles compare with our machines but...
We cut 6061 aluminum all day with 2 flute Ski-Carb end mills from Weldon running Trim E206 or Castrol Superedge 6754 for coolant. We have several machines, the smallest being a BT30 taper Sugino (not...
Mike,
My first post used the terms "spotter" and "spotting drill" both refering to the same tool. to-ma-to/to-mah-to
My second post used the term countersink to correct my mis-use of the term spot face, both of which were refering to the feature not the tool. to-ma-to/po-ta-to
Regardless of...
Of course I should have said 82 degree countersink as opposed to spot face. And thanks for the reasoning behind 82 vs. 90, we do both and I never realized why
The tool wasn't considered to be a total custom piece, I just wanted a stock spotter turned down about .050" for clearance issues.
I...
The problem isn't really EngineerDave nor the "friend" nor the boss. They are all doing what they do, right or wrong.
The problem is that Dave is in an environment that he can't get comfortable with. I wouldn't be comfortable either, and have restorted to several things I am not particularly...
What should I expect it to be?
My customer print called for an 82 degree spot face, plus/minus 1 degree. We needed a special diameter and requested our supplier grind down an off-the-shelf carbide spotter. Supplier decided to make our spotters from scratch, using plus/minus 3 degrees!!! I...
I find it interesting that some of you get more money for reaching goals.
Where I'm at doesn't really matter (monetarily) if you meet goals or not, everyone gets the same raise, 2.875% to 3.125%
And bonus's were based on how much you contributed to your 401K plan. I say were because it's been 7...
CAT 40 taper. Endmills under 1/2". Our bigger unit is type C004.
I recall there being a max spindle speed somewhatlower than we like to cut aluminum.
I have no other right angle experience.
We have had two. Some issues we had were:
1)overheating of the unit. Unit may have been too small for our application. We corrected by spraying coolant directly on the housing. Our second one was bigger but we used coolant from the start so not sure that it was needed.
2) You have to use two...
