Search found 150 matches

by johnfreese
Wed May 15, 2019 5:05 pm
Forum: General Discussion
Topic: Does anyone recognize this drill sharpening jig
Replies: 6
Views: 316

Re: Does anyone recognize this drill sharpening jig

Maybe this will help figure out what parts you need to make.
http://www.hemingwaykits.com/acatalog/i ... 311%2ehtml
by johnfreese
Mon May 06, 2019 4:50 pm
Forum: Milling Machines
Topic: Machinist Jacks
Replies: 18
Views: 955

Re: Machinist Jacks

The biggest use of jacks was on planers. They were used to position parts. usually castings, to get the top surface level. They were also used under clamps where the part did not touch the table. They prevented distortion when the clamp was tightened. Any of the old time machining textbooks show the...
by johnfreese
Mon May 06, 2019 4:42 pm
Forum: General Discussion
Topic: New to me Taft Pierce #1 surface grinder
Replies: 4
Views: 302

Re: New to me Taft Pierce #1 surface grinder

I have the same model grinder. I did get some documentation on line, not much. I would be happy to share. On mine everything is as smooth as glass except the Z axis feed. The documentation I have shoes pictures of the parts but very little of how things fit together. I really don,t have any idea whe...
by johnfreese
Fri May 03, 2019 4:58 pm
Forum: Milling Machines
Topic: Machinist Jacks
Replies: 18
Views: 955

Re: Machinist Jacks

Watch enough You Tube videos on machining. You will see machinist jacks in use. Start with Stefan Gotteswinter.
by johnfreese
Tue Apr 23, 2019 1:27 pm
Forum: General Discussion
Topic: Gear sources
Replies: 6
Views: 878

Re: Gear sources

Check the eBay vendors. They will be 20* pressure angle and metric module.
by johnfreese
Tue Apr 23, 2019 1:24 pm
Forum: Milling Machines
Topic: New to me Bridgeport clone!
Replies: 24
Views: 1512

Re: New to me Bridgeport clone!

The real purpose of the door or opening in the column is core print. There is a very large core in the mold and it takes large core prints to keep it stable.
by johnfreese
Thu Apr 18, 2019 1:26 pm
Forum: Milling Machines
Topic: titan machinery milling machine defect
Replies: 15
Views: 1289

Re: titan machinery milling machine defect

I suspect the head may have been out of tram in Y and with no adjustments for that condition someone rtied to fix it with a grinder. If you bought this machine from a dealer you should definitely return it.
by johnfreese
Mon Apr 08, 2019 5:18 pm
Forum: Lathes
Topic: holesaw on a lathe
Replies: 26
Views: 1693

Re: holesaw on a lathe

The plates are larger than your chuck. How are you holding them on the lathe?
Running that size hole saw on the lathe was a wise choice. Most drill presses run way to fast for large hole saws.
by johnfreese
Thu Apr 04, 2019 7:03 pm
Forum: General Discussion
Topic: essential tools for milling
Replies: 20
Views: 1721

Re: essential tools for milling

Sooner or later you will need an angle plate. An edge finder and wiggler are near necessities.
Consider screw machine length drills instead of jobbers. They are really handy when you have limited headroom.
by johnfreese
Mon Mar 25, 2019 5:39 pm
Forum: General Discussion
Topic: Clockwise Anti - Clockwise To Undo Machine Spindle Nuts
Replies: 17
Views: 1607

Re: Clockwise Anti - Clockwise To Undo Machine Spindle Nuts

The hand of the thread may have been chosen so the nut will not work loose when the spindle is operating. I figure both heads turn in the same direction. Expect one to have a RH nut and the other to have LH. Try turning the nut in the direction the spindle turns.
by johnfreese
Sun Mar 24, 2019 7:35 pm
Forum: General Discussion
Topic: Can you help identify these items?
Replies: 5
Views: 930

Re: Can you help identify these items?

There were lathes larger than watchmakers lathes that used that style tool slide. One name that comes to mind id Derbyshire. I know Pratt &Whitney made a lathe that used that style tool slide. I used one in the school shop in the 50s. As I remember it had about a 10" swing.
by johnfreese
Sun Mar 24, 2019 7:25 pm
Forum: General Discussion
Topic: The Cheap Tool guy got me...
Replies: 18
Views: 1748

Re: The Cheap Tool guy got me...

Many sellers state which thread is used. Don't buy from those who don't.