Search found 1198 matches

by Doug_C
Thu Jun 09, 2005 12:56 pm
Forum: Home Shop CNC
Topic: Newbie programming Q's and recent retrofit
Replies: 4
Views: 1356

Re: Newbie programming Q's and recent retrofit

I wanted an automatic chuck so I could feed some bar stock in and let it cut a part, advance the stock and go again till it was used up. ie. let it work while I'm doing something else. That operation will take more than just the automated chuck. You would need a bar feeder or puller and a turret to...
by Doug_C
Thu Jun 09, 2005 9:26 am
Forum: General Discussion
Topic: Magnifiers
Replies: 18
Views: 3791

Re: Magnifiers

Depending on the location of the focal sections and angles of viewing direction. I wonder if it would be reasonable to consider perfectly round lenses so that they could be rotated in the frames to invert the bifocal progression. Not all that stylish, but some consider them a fashion statement. [img...
by Doug_C
Wed Jun 08, 2005 1:16 pm
Forum: I.C. Engines
Topic: engine conversion, maybe off topic
Replies: 3
Views: 2901

Re: engine conversion, maybe off topic

Ken, Although this is for model engines, since your are still making mod's, I don't think this would be so off topic. Some here do mod's to weedeater engines for models etc. There is also a forum here for antique stationary engines, but this may be off topic there too. A few thoughts to offer in thi...
by Doug_C
Tue Jun 07, 2005 9:20 am
Forum: General Discussion
Topic: Some help tapping stainless steel
Replies: 28
Views: 7719

Re: Some help tapping stainless steel

Rich, It is not advisable to run a bottoming tap full length of the thread. There is little to no lead-in to help lower the torque forces put on the tap. A plug or Number 2 tap has some taper to the first few threads that pre-cut so there is less to remove by the full thread diameter. Once these tap...
by Doug_C
Tue Jun 07, 2005 2:19 am
Forum: General Discussion
Topic: Some help tapping stainless steel
Replies: 28
Views: 7719

Re: Some help tapping stainless steel

Rich, I'd ask what kind of tap are you using? Carbon steel taps would not be a good idea. Good quality 2 flute sharp plug type taps should have no problem cutting those threads. All be it slow at a 1/4 turn and back off to break the chip, but it should cut fine. Finishing off with a bottoming tap wo...
by Doug_C
Wed Jun 01, 2005 8:59 am
Forum: General Discussion
Topic: Stirring the pot--Shapers
Replies: 138
Views: 32440

Re: Stirring the pot--Shapers

A horse is not a "tasty animal"



So......yer say'n this ain't the way they make "Horsey Sauce"? [img]/ubb/images/graemlins/grin.gif"%20alt="[/img]

DC
by Doug_C
Tue May 31, 2005 2:14 pm
Forum: Home Shop CNC
Topic: Newbie programming Q's and recent retrofit
Replies: 4
Views: 1356

Re: Newbie programming Q's and recent retrofit

Hi Glenn, You should look over the interpreter functions available for your control and possibly test for the way they respond in use. The cheezy way to do this is with a phoney tool change step. as long as no automatic tool changer is installed. Other than that, you can try the following. M00 is a ...
by Doug_C
Sun May 29, 2005 1:26 pm
Forum: General Discussion
Topic: hard steel turning
Replies: 9
Views: 2034

Re: hard steel turning

Hard turning is done on known materials and typically up to an .008 finish pass on materials capable of local heat treat by the heat generated ahead of the cut running dry with no coolant. High surface speeds will create the heat and PCBN inserts do the work. Roughing is limited to .02 and cutter br...
by Doug_C
Fri May 27, 2005 11:33 pm
Forum: General Discussion
Topic: hard steel turning
Replies: 9
Views: 2034

Re: hard steel turning

If a file skips across it like glass, you have no chance of cutting it without grinding. That is a lot of grinding. Is it worth the cost of a wheel? Punches are often a D2 tool steel. This takes hours in the decending heat of a controlled furnace to anneal back to a workable condition. Not really wo...
by Doug_C
Fri May 27, 2005 11:04 pm
Forum: Sheet Metal Fabrication
Topic: New (to me) sheet metal equipment
Replies: 18
Views: 10673

Re: New (to me) sheet metal equipment

AT Thanks for your questions that I have a remote chance at leading you and others in a forward direction. I won't say it is always right, just forward. The rest you must learn on your own or someone with with another suggestion in a different manner all together. It looks like you are gaining on yo...
by Doug_C
Fri May 27, 2005 9:29 pm
Forum: General Discussion
Topic: Bidgprt Mill-Need Schematic Mdl 6F Var Pwr Feed
Replies: 3
Views: 618

Re: Bidgprt Mill-Need Schematic Mdl 6F Var Pwr Feed

Robert,

I just sent you a PDF of my book pages on the 6F powerfeed via email.

Let us know what you find and report back here.

DC
by Doug_C
Wed May 25, 2005 12:31 am
Forum: Sheet Metal Fabrication
Topic: New (to me) sheet metal equipment
Replies: 18
Views: 10673

Re: New (to me) sheet metal equipment

Dave, I would expect minimal burr with new knife edges and the correct clearances. Some of this will be dependant on the material ductility too. Say like galvanized verses hot rolled. The skin on the galv material will burr easier than the hot rolled. Worst case might be copper verses brass. Basical...