Search found 1429 matches

by Russ Hanscom
Mon Jul 15, 2019 3:51 pm
Forum: Milling Machines
Topic: planer
Replies: 4
Views: 111

Re: planer

by Russ Hanscom
Mon Jul 15, 2019 1:44 pm
Forum: Welding
Topic: Brass challenge
Replies: 4
Views: 92

Brass challenge

Friend had a memento he wanted, cheap cast india brass, but sentimental. Someone else had previously tried with a regular torch and the result was still two pieces with ugly globs at the ends. I spaced the bits out appropriately on a fire brick and clamped them down and rolled 1/8" brass brazing rod...
by Russ Hanscom
Mon Jul 15, 2019 8:50 am
Forum: General Discussion
Topic: Push Drill Bit Compatibility
Replies: 6
Views: 211

Re: Push Drill Bit Compatibility

as to the original question, push drill bits appear to have a standard shank and are interchangeable - at least that is the case for the several brands I have.
by Russ Hanscom
Sun Jul 07, 2019 3:00 pm
Forum: General Discussion
Topic: Looking for 4032
Replies: 13
Views: 578

Re: Looking for 4032

How critical is that particular alloy? It does not appear to be a common one.
by Russ Hanscom
Fri Jun 28, 2019 7:57 am
Forum: The Junk Drawer
Topic: Chainsaw Sharpening: Files v. Gadgets
Replies: 32
Views: 1119

Re: Chainsaw Sharpening: Files v. Gadgets

Obviously you do not have one of those eucalyptus forests in your neighborhood. Much of Portugal appear to be infested with them. A great source of firewood, but then you probably do not need much firewood either in southern Portugal.
by Russ Hanscom
Thu Jun 27, 2019 10:39 am
Forum: General Discussion
Topic: Looking for a collet sleeve
Replies: 10
Views: 3189

Re: Looking for a collet sleeve

Check ebay. At one point there were several sources with the 5C -Morse adapters. There is a guage line so measuring the diameter of the entrance to your taper will help you select from morse adapters with varying nominal sizes.
by Russ Hanscom
Wed May 15, 2019 9:46 am
Forum: Milling Machines
Topic: Gear Cutting
Replies: 9
Views: 1306

Re: Gear Cutting

Several options; depending on the size and specifics of the gears you are making. One has been mentioned. Another is to take round rod and cut multiple gears on it them part them off, Use a set of soft jaws for boring and finishing the gears. Yes, you can stack multiple blanks on a mandrel and cut t...
by Russ Hanscom
Mon May 13, 2019 8:59 pm
Forum: General Discussion
Topic: Hyperboloid of revolution twirler
Replies: 11
Views: 1468

Re: Hyperboloid of revolution twirler

Correct, you only have to do one quadrant and then mirror to get the other three.

After looking at the project and reviewing math definitions, I am pretty sure what is shown is a parabolic curve, not hyperbola - at least that is the equation I would start with.
by Russ Hanscom
Mon May 13, 2019 8:17 am
Forum: The Photo Album
Topic: Amazing machine work
Replies: 15
Views: 2719

Re: Amazing machine work

Possibly getting off topic, but after the war, the V-12 aircraft engines were used for industrial purposes. Hollywood studios use them to drive generators for arc lights for night time filming and the oil industry used them to drive large high pressure portable pumps. There was an outfit in Long Bea...
by Russ Hanscom
Sun May 12, 2019 7:24 pm
Forum: General Discussion
Topic: VFD question
Replies: 31
Views: 3575

Re: VFD question

Might be a plan; buy a junk forklift and salvage the motor, controls, and battery.
by Russ Hanscom
Sun May 12, 2019 4:26 pm
Forum: The Photo Album
Topic: Amazing machine work
Replies: 15
Views: 2719

Re: Amazing machine work

Almost twins; but the brits had the edge.
by Russ Hanscom
Sun May 12, 2019 12:54 pm
Forum: General Discussion
Topic: VFD question
Replies: 31
Views: 3575

Re: VFD question

Also remember that electrical HP and engine HP are not quite the same animal. An engine rated at X hp rarely delivers that except under optimal conditions, so a 10 HP electric may be more than ample. No engineering reason that your goal cannot be met except that the power conversion you desire is no...