⏣ General Metalworking - Main Page

⏣ General Metalworking All aspects of working with metal.. This forums is a Web, Mobile and Social Media interface to rec.crafts.metalworking.
There are 445529 articles in 34948 discussions. See the most recent and the best rated articles in ⏣ General Metalworking

The most recent discussions

Rack and pinion Sanford model SG48 parts

February 19, 2017, 9:00 pm

I'm looking to replace the longitudinal feed rack and gear parts on a Sanford model SG48 surface grinder as mine are well worn with too much backlash. Looking for specs and/or place to buy them. Any ... Read more »

MT 5-1/2 ???

February 17, 2017, 7:03 pm

Overall I am pretty happy with my Chinese made Precision mathews PM1440LBE lathe. However there are some little things that just make me go, Hmmmmm.... The 1440 mostly gets used for quick and d... Read more »

Linear Way Saddle

February 16, 2017, 6:23 pm

I'm working on a mid size CNC mill with linear rails. I've got a lot of it figured out including squaring it up as its built. The goal is a mid size bed mill with very good acceleration to opti... Read more »

Best drive belts?

  [ 2 ]
February 13, 2017, 10:11 pm

I blew the belt on my 6HP YammerHammer blower, meaning I had to push/pull the darn thing home into the garage. It has (previously) eaten 2 goodsized chunks of newspaper/ads burried in the snow - b... Read more »


February 13, 2017, 1:04 pm

i have press FEINTOOL HFA 6300 Regards Yan yan_kraynik@ukr.net Read more »

What the hell is going on with this grease?

February 12, 2017, 10:25 pm

To all the greasy folks here, About 7 years ago I took apart my dividing head to make some changes. I completely degreased all the parts. When re-assembling the thing I used white lithium grease o... Read more »

Modern car paint and rust

  [ 2 ]
February 12, 2017, 6:43 pm

Hi folks, Quick question. Many cars from the 1980s used to rust badly. Sometime in th e 1990s, this changed - and quite suddenly. Does anyone know what specific changes were made to the paint com... Read more »

Aviators oxygen vs welding or medical oxygen.

February 12, 2017, 4:01 am

So I got a cylinder from a friend, that is a Avox System 9700 series, 11.0 CU FT 1800 PSI. Which I really really like, but I am confuse about if I have to refill it which O2 should I use, what if I ... Read more »

Timesaver lapping abrasive

February 11, 2017, 2:49 am

Great stuff, Timesaver lapping abrasive. Guaranteed not to continue to cut. This week I had two instances to use it. The first was when I tried to thread new nuts onto the shaft of an old (probably... Read more »

resistance to bending angle or tube which is more resistance

February 10, 2017, 11:13 pm

Want to build a gravel screen to sort out over size rocks from sand. The gravel and rocks would be dumped on grizzly bars on a 40 degree incline and the gravel and rocks would slide down the slop... Read more »

Click here for other recent discussions »

The best rated discussions

Drilling heads off countersunk Allen screws? rating: 5

  [ 2 ]

On race cars the floor trays are often carbon composite flat panels and held to the main carbon tub by countersink Allen screws. Grounding or general butchery sometimes makes the female hex unusable,... Read more »

Flattening silver wire rating: 5

I've been making simple stuff for years, hammering away at 16-20 guage silver wire. I've got a neck injury now and every time I pick up the hammer, I set myself back about 2 months in my healing. I ... Read more »

V-Belt -- K cross section? rating: 5

I'm looking to replace the V-belt on my drill. It is labelled K-32.5. I'm familiar with the L series of belts but not K. My local hardware emporium (McLendons) doesn't have any K profile belts so ... Read more »

Costco/"Worksmith" 115 drill bit sets saga rating: 5

  [ 2 ]

Awl -- Some Qs came up some time ago regarding these drill sets, with most comments being pretty favorable (including my own), esp considering the price: $20-39, TiN coated, etc. 135 deg point (ab... Read more »

Ground rod question rating: 5

  [ 2 ]

Today, a friend called me who was doing a project. They had a copper coated steel rod about 5/8 dia. that was to be used as a ground rod for electrical. They had no means of bending it, as it had... Read more »

Important Weight Question about ANGLE IRON rating: 5

Hey guys. I'm getting ready to remove my rear bumper on my camper and attach angle irons directly to the I-Beam frame in order to haul my golf cart on the rear of the camper. I got the idea from a fe... Read more »

Please help identify a 9" steady and follow rest ? rating: 5

Hello all, I had the fortune of cleaning out some last remnants of a home machinists estate, and ended up with a surplus steady and follow rest in very good condition. Unfortunately they do not fit ... Read more »

Paralleling phase converters? rating: 5

I have read here that some folks use more than one phase converter in their shops and just turn on more converters as the load increases. Are these rotary converters connected in parallel? If so, is ... Read more »

1/2" sch. 40 steel pipe pressure rating rating: 5

Can 1/2 schedule 40 steel pipe be used for hydraulics up to 2000psi? Read more »

Lincoln Square Wave 300 rating: 5

Hello, all, Does anyone have any comments on the Lincoln Electric Square Wave 300 primarily for aluminum TIG work? I probably will still have stick and some exotic stuff like Stainless tubing to do, ... Read more »

Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.