Search found 1416 matches

by tornitore45
Sat Jun 02, 2018 4:27 pm
Forum: General Discussion
Topic: Custom Size Lapping plate
Replies: 7
Views: 337

Re: Custom Size Lapping plate

Sure, I have a drawer with divider. Zinc and Copper. I use them for special washers. They actually cost less than washers at Home Depot.
by tornitore45
Sat Jun 02, 2018 4:24 pm
Forum: General Discussion
Topic: Printer's mystery metal
Replies: 13
Views: 562

Re: Printer's mystery metal

I have a phrase to identify the quest for machinable free stock. "Metal Content" When my wife manage to entrap me in one of those Good Will, Salvation Army stores I may buy something just for the "Metal Content" value. My daughter is a professional dumpster diver and now and then picks up some scrap...
by tornitore45
Sat Jun 02, 2018 11:36 am
Forum: General Discussion
Topic: Printer's mystery metal
Replies: 13
Views: 562

Re: Printer's mystery metal

Thanks all
I claim no expertise in spark reading but just tested all the 6 bars I have and consistently look like SS.
Yellow spark with a single burst at the end that looks like an elongated chicken foot. Several filaments in a very narrow cone all exiting from the same spot.
by tornitore45
Sat Jun 02, 2018 7:57 am
Forum: General Discussion
Topic: Custom Size Lapping plate
Replies: 7
Views: 337

Re: Custom Size Lapping plate

Good luck finding copper pennies.
by tornitore45
Fri Jun 01, 2018 11:51 am
Forum: General Discussion
Topic: Printer's mystery metal
Replies: 13
Views: 562

Printer's mystery metal

Through the years I have deconstructed several printers. The guide rods are ground stock that machine nicely. They look more SS that Steel. To me SS looks a little more silvery yellow and steel looks more lead gray. They are magnetic so the first easy test is inconclusive. Does anyone know what they...
by tornitore45
Wed May 30, 2018 6:44 pm
Forum: General Discussion
Topic: Indicating knurled surfaces
Replies: 14
Views: 537

Re: Indicating knurled surfaces

My favored hack is a piece of springy worn out hack saw blade held in the tool post to ride against the rough surface, gear teeth, thread, knurls, whatever you have and place the indicator on the blade. Leverage may even increase the resolution. You do save worn hack saw and grind the teeth off, do ...
by tornitore45
Sun May 27, 2018 11:48 am
Forum: General Discussion
Topic: Another "How to make" question
Replies: 31
Views: 1390

Re: Another "How to make" question

What is the limitation that sets your RT resolution to 1 degree? Never heard of a RT like that.
Perhaps removing such limitation is the answer to endless filing.
by tornitore45
Tue May 22, 2018 6:35 am
Forum: The Junk Drawer
Topic: Treatment to Toughen up MDF Table Top?
Replies: 16
Views: 737

Re: Treatment to Toughen up MDF Table Top?

Seal the MDF with Cyanoacrylate.
After taking out a second mortgage.
by tornitore45
Tue May 22, 2018 6:31 am
Forum: General Discussion
Topic: Thin workholding suggestions
Replies: 13
Views: 760

Re: Thin workholding suggestions

Start with a piece larger than you need. Clamp it down flat on areas outside of the part footprint. Reduce the thickness without machining your clamps. Machine the inclined surface before contouring. When contouring leave thin webs every so often to keep the part from braking off. Cut the webs at th...
by tornitore45
Mon Apr 30, 2018 12:33 pm
Forum: General Discussion
Topic: Milling slots in 1045
Replies: 11
Views: 712

Re: Milling slots in 1045

The way I would do it is to drill 7/16 holes at 1/2" center to near depth or through. Then clean up with a 1/2" end mill.
2 reasons: my mill is not very rigid, I can resharpen drill bits but not end mills.
by tornitore45
Wed Apr 11, 2018 4:37 pm
Forum: General Discussion
Topic: Free spinning feed knobs
Replies: 15
Views: 1973

Re: Free spinning feed knobs

Personally I like the better feeling of control of a fixed handle on my machines. Most handles are rarely spun so fast to bother, and those that are are motorized on my mill (X and Z). Cranks that one spin fast or must put some muscle behind can certainly benefit
by tornitore45
Wed Apr 11, 2018 4:26 pm
Forum: Live Steam
Topic: Anyone else like to juggle between machines?
Replies: 22
Views: 1644

Re: Anyone else like to juggle between machines?

Planning your operations will be time well invested. I follow the same plan outlined by SteveM. A spreadsheet is great to calculate the dimension that are important to you when machining. Sometimes the drawing dimensions can be either unimportant, unpractical, not useful, referenced from the wrong ...