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There are 1290 articles in 386 discussions. See the most recent and the best rated articles in ⏣ Metalworking Craft

The most recent discussions

Table of RPM for drill size


March 23, 2016, 2:03 am

Is there a url around of a nice table of rpm for each drill size for the various material. Each time I need to use the vertical drill I figure it out, but it would be handy to final attack such ... Read more »

explanation


March 31, 2015, 10:15 am

I have a problem on my digital KND CNC lathe K1000Ti -A, who displays an alarme over- travell I tried to ignore this alarm at startup with CAN / EOB but no result is given. the registered ... Read more »

Is this aluminum?


November 6, 2014, 8:19 pm

https://www.flickr.com/photos/27532210@N04/ The wheel. You should be able to zoom in. Notice it has a chip in what otherwise looks like aluminum. Do they bake the outer surface somehow to make ... Read more »

Bending Aluminum


June 22, 2014, 11:18 am

I want to bend a 3' long, 1/4 thick x 2 wide flat stock aluminum bar to roughly a 7 radius U shape which will give me a 14 (ID) gap between ends. I'm reading methods of bending aluminum and some ... Read more »

Repairing stripped metric sheetmetal threads


May 14, 2014, 5:01 pm

Machine screw (measures 2.8 mm outside diam: is this a 3 mm screw?) mates with tapped hole in steel sheet metal (about 1 mm thick). Hole in sheet metal is stripped. What is the easiest way to r... Read more »

Load capacity on steel arch


March 22, 2014, 1:33 pm

How much load will a 2x6 steel tubing arch carry. The width is 60'. And the height in center is 20 feet. Need to support 2feet of width at top dead center of arch. Read more »

Can you sell to Spanish speaking customers?


October 14, 2013, 6:22 pm

I'm looking for a reliable Spanish speaking representative who can field all of our inquiries that come in speaking that language. I have a guy in Mexico, but his workload is too high so we are loo... Read more »

Machinist's Workshop magazines for sale


September 8, 2013, 6:26 pm

I just listed a group of 5 issues of Machinist's Workshop Magazine (Feb-Mar 2009 through Jun-Jul 2012 on ebay today. Have a look if you're interested: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem... Read more »

Home Shop Machinist Magazines for sale


September 8, 2013, 6:24 pm

A batch of 15 issues of The Home Shop Machinist magazine. Jan-Feb 2009 through May-Jun 2011. If interested see: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=161103176668 Jeff -- Jeffry W... Read more »

Anybody recognize this collet ?


July 18, 2013, 6:39 pm

I opened up the closer on my Yuasa Speeder this morning for the first time and found this. I think the guy I bought it from might have mentioned this, but I don't recall. The broken part looks ... Read more »

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The best rated discussions

Forming ("chasing") internal threads?

rating: 4

Snap-On makes this internal thread chasing tool: It comes with what seems to be a selection of tips in different t.p.i. but not diameters. Since there are no diameter specs, I presume that these tip... Read more »

Tempering 6061? (was: Welding 6061 weakens it?)

rating: 5

Some in these groups have opine'd that welding 6061-T6 would make it lose its treatment and result in T1. Aging at room temps would bring it to, maybe, T2 after a month. TIG welding will bring the... Read more »

What's needed to wire up a rotary 3ph converter?

rating: 4

Rotary converter will be installed in my garage and used to run lathe & mill (one at a time). Supply will be dryer circuit of 30A 220v. Wiring up is straightforward, but what switch(es) and fuses sh... Read more »

E-Z Copter

rating: 5

The design of EZ-Copter is very simple, it uses a lightweight frame with seat, and a rotor head mounted to it. Mounted on the rotor head are the two rotor blades and two lightweight motors used to ro... Read more »

new 4x5 Micro Lathe

rating: 3

If you're into Unimats and watchmaker lathes, a manufacturer of the popular 7x lathes has come out with a new machine called the C-O. It accepts many of the Unimat-3 accessories. Harbor Freight is... Read more »

BOYAR SCHULTZ 612 Grinder manual

rating: 5

I've recently acquired a Boyar-Schultz 612 manual surface grinder, and would like to get a manual to check for missing parts/correct wiring, etc. Anyone have a scanned version available? Or know of a... Read more »

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