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Golfman25 said:
Guys from Purdue.
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One time when I worked for Greenfield Tap & Die I made a tech call down on the south side. Guy was having trouble threading a part to spec. Tell me is this is possible...

Material: Titanium 6AL4V
Part thickness: 0.300
Hole type: Blind hole
Hole depth: .250
Thread: 1/4-20
Thread depth: .250 of FULL Thread
Note: Cannot deform part with drill or tap

I took one look and told the guy "Who is the engineer? This is impossible, even with a thread mill. With a thread mill I could get to within 1/2 turn (.025) of the bottom".
 
Steve S said:
One time when I worked for Greenfield Tap & Die I made a tech call down on the south side. Guy was having trouble threading a part to spec. Tell me is this is possible...

Material: Titanium 6AL4V
Part thickness: 0.300
Hole type: Blind hole
Hole depth: .250
Thread: 1/4-20
Thread depth: .250 of FULL Thread
Note: Cannot deform part with drill or tap

I took one look and told the guy "Who is the engineer? This is impossible, even with a thread mill. With a thread mill I could get to within 1/2 turn (.025) of the bottom".
Click to expand...

"Nothing is impossible for the person that doesn't have to do it!"
 
Moving to Montana to become a Dental Floss Tycoon……
 
Steve S said:
One time when I worked for Greenfield Tap & Die I made a tech call down on the south side. Guy was having trouble threading a part to spec. Tell me is this is possible...

Material: Titanium 6AL4V
Part thickness: 0.300
Hole type: Blind hole
Hole depth: .250
Thread: 1/4-20
Thread depth: .250 of FULL Thread
Note: Cannot deform part with drill or tap

I took one look and told the guy "Who is the engineer? This is impossible, even with a thread mill. With a thread mill I could get to within 1/2 turn (.025) of the bottom".
Click to expand...
You can do it by thread milling or bottom tapping the hole then follow up by hand tapping after grinding the end off the tap…..it would not be fun though….there would be scrap…… in the end it would be easier to just punch the engineer
 
Blueone said:
You can do it by thread milling or bottom tapping the hole then follow up by hand tapping after grinding the end off the tap…..it would not be fun though….there would be scrap…… in the end it would be easier to just punch the engineer
Click to expand...

Part thickness: 0.300
Hole depth: .250
Thread depth: .250 of FULL Thread

Grand pop would always say "can't means won't"
I like your enthusiasm.
 
techmitch said:
Part thickness: 0.300
Hole depth: .250
Thread depth: .250 of FULL Thread

Grand pop would always say "can't means won't"
I like your enthusiasm.
Click to expand...
You can do anything…. The thread depth gage gives you a 1/4 turn….did you miss altering the hand tap?….. I do this for a living…. If you can afford it I can do anything
 
techmitch said:
Part thickness: 0.300
Hole depth: .250
Thread depth: .250 of FULL Thread

Grand pop would always say "can't means won't"
I like your enthusiasm.
Click to expand...
And don’t forget edm….. I could burn that to the bottom no problem
 
I am running a cat part this weekend 22 minute cycle time in a 5 axis cnc machine. Super easy load unload ….. just to volunteer to give the guys the weekend off… raining at the boat anyway.,,,,,I don’t know the part so that was interesting…. Just a simple exhaust elbow ….. I tell you running it today I was losing my mind that cat would design something so complicated that could be so simple…..3500 series …. It’s no wonder these big diesels cost so much
 
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