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The most recent discussions

Get the Best Welder Rental Services - Red-D-Arc Welderentals

May 22, 2020, 9:15 am

Red-D-Arc is the largest provider of welding machine rental and welder rental products and services in North America, with over 60,000 units in our fleet. Eliminate the cost and inconvenience of equi... Read more »

Welding table,checker plate.

March 30, 2020, 7:22 am

Would I make the working surface flat or use the checker side as the table surface? Read more »

New Medicine for Corona virus (COVID-19)

March 20, 2020, 12:31 pm

Corona virus medicine / vaccine COVID-19 medicine today - There is already a finished medicine for Corona virus (COVID-19) in Finland. Faron Pharmaceuticals Oy (FARON) already has Corona medicine,... Read more »

v-up E7018 150A 4mm / 5/32nd" rods

March 15, 2020, 7:39 am

Lincoln Foundation's Welding Procedure Handbook has 5/32nd (4mm) 7018 at 150A for T-fillet|vertical-up|Code-quality|fair-weldability. Taught v-up T-fillet at college with around 85A and smaller rod... Read more »

Airco 300 squarewave welder. Need manual

March 9, 2020, 2:18 pm

Looks similiar to syncrowave 300 -- for full context, visit https://www.polytechforum.com/welding/--.htm Read more »

Acetylene B Tank adapter to Mapp Gas Canister???

February 11, 2020, 10:26 pm

I was looking to purchase a guys turbo torch. It comes with the quick change handle, a small tip, regulator and hose. The regulator attaches to a Acetylene B tank. The B tanks are expensive and I onl... Read more »

oxy-propane pressures & conditions

February 2, 2020, 1:01 pm

I've recently had a perfect job to refine my oxy-propane cutting conditions. Goldilocks (just right) challenge. I was doing paper engineering during the transition from oxy-acetylene to oxy-propa... Read more »

return lead 2 clamps structure and item?

February 2, 2020, 12:14 pm

Hello all Yup it's pouring with rain and there's an emergency welding job which has to be done... Does it help to have a return lead with two clamps - one attached securely to the structure (in t... Read more »

Diffuse heat from an arc welder?

January 29, 2020, 12:37 am

Is there a practical way to use an arc welder for the sort of heating traditionally done with a gas torch? Long ago there was an atomic hydrogen torch which consisted of an arc with hydrogen blow... Read more »

6010 SMAW scaffold tube railings

January 13, 2020, 4:28 am

What conditions (rod size, Amps, etc.) and techniques would you use to weld scaffold tube to make railings? Standard scaffold tube - 48.3mm OD, wall thickness about 4mm, galvanised (I think that's... Read more »

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The best rated discussions

Brazing or welding thick copper?

rating: 5

I will be making a gate for the entrance to a house and will need to join some thick copper rectangular bar. The 0.5 x 1 110 copper bar is for the gate frame and the infill of the gate will mostly be... Read more »

Lincoln Ranger stop welding

rating: 5

I raised the amps from 130 to 145 during this is process the welder complained little spark no we disconnected the lines to see what the problem could be to the principals point of no spark at all ... Read more »

handymig by sip

rating: 5

I have a handymig that will not weld, there is a white wire in the gun or torch that is not connected. I would appreciate if someone knew what it is connected to. Thankyou Read more »

Schematic for Econotig control board?

rating: 5

Does anyone have this schematic? Read more »

does aluminum spool wire have a "shelf-life"?

rating: 5

I was wondering...going to start a project and the aluminum wire in my spoolgun is a couple years old. Should I replace it? Nok Read more »

Rustbuster rod?

rating: 5

Does anyone have experience with the Rustbuster Rod by US forge. The user sheet claims it welds all dirty steels, all positions. The rod has a rough brown coating. Thanks, Will Read more »

how to get rid of post-welding smell

rating: 5

Hi all, I've bought a welded aluminum cap for my truck, and I noticed a fairly strong manufacturing smell. Aluminum itself has no smell of course, so I guess this is left over from welding. I am wond... Read more »

Air leak in TIG system? Or???

rating: 5

First off, I'm just a hobby welder (mostly light stuff like bicycle frames) and have used my machine very little in the last few years. L-Tec Heliarc 250 HF Plus about 20 years old Heliarc HW-1... Read more »

Lincoln Square Wave TIG 275 problem!

rating: 5

Help please! My machine is behaving most rudely. It starts off fine an after a few seconds the main arc goes out and just leaves the HF arc and a hissing sound. When I start the machine cold it works... Read more »

Craftsman Welder Manual

rating: 5

Before I go an buy one from sears, does anyone have a copy that they would like to share of the owners manual for a Sears Craftsman Home N Shop 50 Amp Arc Welder Model # 113.201420. I have not been... Read more »

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