From Snohomish County Makers Wiki
Jump to: navigation, search


Some notes for a running reference on Welding. Feel free to add reference bits to this as needed.

  • You must be certified by the equipment owner, Chas Ihler, or a designated trainer before using any metal shop items. This includes the chop saw, hot saw*, grinders, sanders and welders.


You can get burnt, electrocuted and/or gain eye damage by welding if you do not take the proper precautions. You may also cause others permanent damage as well. Anyone found not following shop rules will be banned from all work at the makerspace until a special meeting can be held by the board of directors or by committee formed by the board as necessary. You will not be refunded workshop or membership dues unless we find you were not at fault. There is no appeal process. Absolutely no tool but be touched nor may you approach any work being performed without reading, agreeing, and signing our Makerspace Use Agreement. (Paper Copies on Site, or See forms for Joining).

You can also cause property damage by fire and hot items landing on equipment or materials. You are responsible for any damage if you did not take proper precaution as determined by the Board of Directors.

  • Wear All Cotton or Leather. Consult with Central Welding Supply for personal protective equipment that meets your level of risk safety. The minimum is long sleeve cotton shirts or a heavy cotton or leather jacket, welders gloves and a welding helmet. A full leather welder apron and long sleeves are recommended. Jeans are acceptable but they also will not leave you immune to possible burns. Welding Gloves are not optional, we have a pair on site for general use.
  • Welding Helmet: We recommend auto-tinting welding helmets. Consult the equipment owner (currently' Chas) for assistance in setting up your auto-tint hood. Consult the experts and Central Welding Supply in Everett. We do have some helmets on site. Please note they must be inspected before use.
  • Never touch any metal without gloves; welds stay hot for better than 15 minutes. Do not dunk your weld in water. Not only will it weaken your weld but it'll also cause possible steam burns.
  • Do not adjust the equipment. The equipment is borrowed. Any maintenance, even basic maintenance in switching bottles, replacing feed will be done by the equipment owner. This may cause some inconvenience, please take that in consideration when planning to use the equipment. Absolutely do not touch or manipulate any settings, adjustments, tanks, regulators or safety devices on the equipment.
  • Ensure the area well beyond the welding area is clean of cardboard, saw dust and any other flammable items.
  • Warn all people present and entering about the dangers of welding and warn not to watch without proper PPE.
  • Warn all participants in the general area when starting each weld by announcing "Welding", "Watch your Eyes", "Starting", or any other agreed upon general statement that makes obvious to persons that welding is about to be performed and take care to protect themselves and their eyes.
  • Ensure you have at least 200 psi of CO2 before welding.
  • When turning on the CO2 stand to the side of the regulator and shield yourself from regulator explosion when turning the tank on slowly. You only need to open it 1 full turn. Ensure you close the tank completely when finished welding.
  • Allow the welder at least 5 minutes of cool down after welding before you turn it off.
  • Open the shop overhead at least 2 ft and use the fan when welding.


  • Do not crimp the wand wire, it cares the wire which should not be bend excessively or crimped and carries CO2 gas.
  • Be very mindful of the trigger on the wand.
  • Pick a good ground point.
  • Use good body positioning; welding is hard enough without thinking about your back hurting, leaning, etc. Don't become part of the circuit and make sure you're in a comfortable position before starting your weld. Also consider reflections and other safety issues.
  • Check yourself and surrounding area for burns and fire often.


  • MIG Welding Steel in our shop requires solid core 0.035 welding wire.
  • An owner bottle of CO2 is onsite (the shiny tank).
  • Electrodes go bad from time to time, when one goes bad you're done welding until it can be replaced; commonly from a lot of use or getting to close to your weld with it. If no more wire is coming out you likely have run our of welding wire of the electrode is fused shut.
  • Argon is only used for Aluminum, also an owner bottle.
  • Owner bottles are never exchanged! They are filled and given back.. that's why only the equipment owner will handle these besides other dangers of the tanks.


Do not adjust anything without pre-approval from the equipment owner; no acceptations.



Owners & Trainers

All equipment is on loan.

Anvil is owned by Tom B. Hot Saw is owned by Tom B.

Metal Chop Saw is owned by Chas I. Lincoln MIG 200 Welder is owned by Chas I. Bottles are owner bottles owned by Chas I. Hand Grinder is owned by the Makerspace but Chas I. is the equipment owner for maintenance purposes. Bench Grinder is owned by the Makerspace but Chas I. is the equipment owner for maintenance purposes.

Lincoln Pack HD is owned by Kelly G.

Certified Trainers: Chas Ihler Justin Douvier Kelly Gruol

Old Notes

Some notes from our first exploratory metal shop training:

Aluminum bends easily and can't be "pushed" far. Requires certain wire (4043 is common) that work on only some types of aluminum MIG for aluminum is good for larger stuff but thinner requires brazing or TIG. Use argon gas

MIG: Dual Sheild Produces nice welds.. CO2 okay for gas. Get close while welding!

Plasma Torch Watch your cutting direction... There is a good side and a bad side. Normal compressed air from a compressor works fine.