Search found 722 matches

by Lew Hartswick
Sat Feb 03, 2007 12:09 pm
Forum: Casting & Foundry Work
Topic: Foundry Recommendation
Replies: 5
Views: 3860

Are they loose patterns, mounted on a matchplate, or what? I've used O.K. Foundry in Richmond, VA but they only work from matchplates. Also you'll pay handsomely per piece if the quantity is small. I was just (within the last week or so) reading on another board about some Amish or Mennonite foundr...
by Lew Hartswick
Sun Jan 28, 2007 7:05 pm
Forum: General Discussion
Topic: Easy 'How-To' for adding common symbols in a post.
Replies: 4
Views: 1393

The problem is with those "ready made" fractions is they are so small on a
lot of screens they can't be read. The diameter and degree could be
usefull though.
by Lew Hartswick
Mon Jan 15, 2007 1:18 pm
Forum: The Resource Library
Topic: Grinding wheels and HSS
Replies: 53
Views: 103350

Marty, I built a few rests for the grinders at school. I have the pictures on my page at the set that is labled DSCF******* They are a little big, I hadent figured out that I may want ot link to them when I put them there. Guess I should "smallen" them . :-) .....
by Lew Hartswick
Thu Jan 11, 2007 12:30 pm
Forum: The Resource Library
Topic: Grinding chip breakers on HSS toolbits
Replies: 59
Views: 77197

Harold, Could you show a sketch of how the bit is orientated wrt the the
work? I guess the bit is parallel to the axis of rotation of the part , due to
the curve on the side but is it also "tilted" sidewise? For a deep bore how
does this work?
by Lew Hartswick
Sat Jan 06, 2007 3:36 pm
Forum: General Discussion
Topic: Milling identical pieces
Replies: 9
Views: 1904

Two comments. The series of triangular peices if they are pined together with two pins (spring type) and machined as a unit will be so close to identical as to require sophisticated measuring to see the difference. Second. I just saw a whole lot of , from 1/4 " to 1 " slices cut off of 136# railroad...
by Lew Hartswick
Mon Dec 25, 2006 11:38 am
Forum: General Discussion
Topic: Does anyone have the DM45 Dovetail mill that PennTool sells?
Replies: 4
Views: 1256

It's pretty safe to assume the green is ground. Are the other two black and
white or brown and blue? If black and white , black is "hot" and white
"neutral" . If brown and blue (european std. because often for 220 both hot)
I'm not sure without seeing the rest of it.
by Lew Hartswick
Mon Dec 25, 2006 12:22 am
Forum: General Discussion
Topic: "Part"ly confused...
Replies: 3
Views: 1049

Re: "Part"ly confused...

Hello all, If the the diameter of cylinder gets too thin - wont the right hand portion (the piece being parted off and not being held in the chuck) of the workpiece get knocked off center or bent under the parting cutter, pulled out of the dead center - Thanks to all for all of your help! -todd Fir...
by Lew Hartswick
Wed Dec 20, 2006 5:22 pm
Forum: General Discussion
Topic: Hooray were back up
Replies: 11
Views: 1690

Hooray were back up

Way to go crew. Glad to see the board up again.
by Lew Hartswick
Sun Dec 03, 2006 12:17 pm
Forum: General Discussion
Topic: Locating exact center of broken stud.
Replies: 7
Views: 1942

Use a left hand drill bit when you get to the drilling bit , sometimes you get
lucky and the stud come out. Course it depends on how frozen it was.
by Lew Hartswick
Wed Nov 22, 2006 9:53 pm
Forum: General Discussion
Topic: Rockwell T&C grinder
Replies: 40
Views: 10206

Brentin wrote:No need to apologize. I have learned a lot about tool grinding.
Here is a "before" photo. I have a lot of cleaning to do
That pix. looks Exactly like the one in the high school metal shop. I have
used it a little. What spiondle oil should be used ?
by Lew Hartswick
Wed Mar 22, 2006 6:00 pm
Forum: General Discussion
Topic: Slightly OT -- what makes for an active forum?
Replies: 34
Views: 7691

quote 2) Answer questions. Not only from the members you "know" and not only about your favorite topics. If you see a question with no or few answers, take another look and see if you can contribute something. endquote I agree, BUT please only if you "know" the answer or the subject. I've seen WAY t...
by Lew Hartswick
Wed Sep 22, 2004 9:16 pm
Forum: General Discussion
Topic: Thread form cutter bits, sharpen ornot to sharpen?
Replies: 10
Views: 2156

Re: Thread form cutter bits, sharpen ornot to shar

Pete913 There is nothing wrong with those "snail shell" threading tools. I just did a
M10x1.5 thread today with one of those on a Clausing with quick change holder. It
sure was a pain having to reverse the lathe for each pass though, (an inch lead screw ).
It made a nice thread,.