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⏣ General Metalworking All aspects of working with metal.
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Please see below the list of the most recent and the best rated articles in ⏣ General Metalworking

The most recent discussions

Quick connector for Class 8 dual wheels.


May 26, 2015, 10:34 am

http://www.mwdropbox.com/Dropbox/Airline_connector.jpg The above is the type currently used. Twice. The other is a 180 deg fitting for the outer wheel. 20+ minutes to install per wheelset on hand... Read more »

Ultrasonic cleaning of Brass- corrosion of stainless?


May 26, 2015, 9:33 am

A friend is cleaning brass prior to reloading in an ultrasonic cleaner using an old formula- 1 qt H20 1 cup vinegar 1 Tsp salt 1 Tsp soap Seems like a couple of the pans have corroded through... Read more »

Strength to Weight Ratio -- Units


May 25, 2015, 11:17 pm

Are their common units for strength-to-weight ratios? The numbers kind of all look wacky when I try it -- Pascal-m^3/kg = (N/ m^2)*(m^3)/kg = N-m/kg = (kg-m/s^2)(m)/kg = m^2/s^2? I've never seen i... Read more »

Compound Indexing on a 5th axis diving head


May 25, 2015, 9:50 am

Hello, I cannot find charts or formulas to figure out the method of achieving a dual angle position on a tilt/rotate style dividing head. e.g. : 5 deg on 8 deg say tilting the head 20 deg and rotat... Read more »

OT carbon fiber


May 24, 2015, 3:03 pm

I was wandering aimlessly around the internet and found the Hexcel web site. They have a lot more products than they use to have, one of which is pretty much made for uses as BMW . http://www.hexce... Read more »

stiffness


May 23, 2015, 8:33 pm

Is there a general rule(s) that describe the stiffness of a round tubing to the stiffness of a solid rod? For instance: is 1 dia. round rod stiffer than 1 dia. x .125 wall tubing? How much large... Read more »

How to you clean or make a tiny hole?


May 22, 2015, 10:31 pm

Butane gizmo. Got it at a yard sale. Not clear it ever worked. Is full of Butane. The orifice is two concentric brass parts screwed together with a tiny metal disk in between. Disc is very thin ... Read more »

Monarch AA vs Polamco/Toolmex TUG 40 lathe

  [ 2 ]
May 22, 2015, 9:06 pm

Pictures are here: http://igor.chudov.com/tmp/Monarch-vs-Polamco/ Right now, my shop lathe is a Monarch model AA 16x54 lathe. The amazing thing about it is that it is almost brand new (!... Read more »

How a lock works


May 22, 2015, 7:48 pm

Here's a pretty good animation I came across which can be used to show your non-techie friends and young kids what goes on when you push a key into a cylinder lock and turn it. http://www.wkrp.o... Read more »

More TPP punch-n-judy show


May 22, 2015, 2:46 pm

http://tinyurl.com/ledf3a2 sweeping legislation to strengthen the administration's hand in global trade talks advanced toward Senate passage Thursday after a showdown vote that remained in doubt... Read more »

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The best rated discussions

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5

Blacken Stainless Steel Patina Darken Metal Finishes

  [ 2 ]

I've tried some retail store cold bluing products on cold & hot rolled steel parts, and have seen the sketchy results which weren't impressive. I was looking for a cold method to darken a small st... Read more »

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5

WaterJet machining rates


Ready to cut some 1/8 to 1/4 inch thick alluminum plates. Any ballpark numbers for pricing - in terms of $$$ per inch cut ? There will be many openings cut, so the waterjet will have to stop/go about... Read more »

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5

Ammco Brake Shoe Abrasive Belts - Need a supplier


I have a model #880 Ammco brake shoe grinder and need to find a supplier of the abrasive belts. I have contacted Ammco and the parts person did not have any information on the product at all. I hav... Read more »

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5

Carriage play on Atlas Lathe


Hi all, I just ordered in a new Phase II quick change toolholder. Man I had no idea what I was missing. I was working last night and just loved it. However after setting it up I was checking my 10 At... Read more »

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Need advise about buying Millrite mill


There is local guy selling his Millrite mill for $1300. I haven't seen it but he is saying it's tight. Any word of advise? What should I check when I'll get a chance to see the machine? I posted li... Read more »

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5

Mitutoyo Quick Vision 200pt CMM measuring machine for sale


New in 1999 and can be tested.. For full spec go to www.mitutoyo.co.uk Machine located in Larkhall which is 20miles south of Glasgow Read more »

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Ebay Scam - Safeharbor Request


I just got the Safeharbor security verification notice. Just for fun, I did a trace to the ip of megabank.com and found it went to Bank Internasional Indonesia in Jakarta. One way to solicit fund... Read more »

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Trailer sides, solid or expanded?


I have a 12 foot dual axle trailer with angle sides. Been thinking of building a ramp and enclosing the sides. WOuld solid 1/8 inch or 3/4 inch expanded be better? The floor is wood. Read more »

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5

Brazing history


In reading some stuff on early automotive history, there was some discussion of late 19th century bicycle history. It mentioned that the steel tube frames were brazed in 1880s and 1890s. I know that ... Read more »

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Mounting Conundrum, Revisited

  [ 2 ]

OK, here it is again with more pictures and explanations. Sorry for starting a new thread, but it seemed reasonable given that I did such a poor job of getting the design problem stated in the l... Read more »