July 10, 2014

TIG Welding and Powder Coating

Lots of parts passing through the Mint Design shop in the last few weeks.  Lots of TIG welding and powder coating, and even showing off The Can Carabiner at a trade show!  We sold quite a few and had a lot of interest in it.  There were also a few “What the heck is that?” and after explaining it we got a lot of, “Whoa that is awesome!”.  After some field testing and feedback from our customers we’ve got some very minor tweaks in store for future units and the presentation down the road.

The Can Carabiner

Now back into the shop!  We have a custom 1/8″ 5052-H32 radiator shroud for a custom 2JZ Toyota truck project.  The fabricator/client provided the dimensions and the requirement for the “Teq” and “Supra” logo to be engraved into the metalwork.  It was easy enough to do and model in Solidworks and then create the flat pattern.  The CNC cut part was provided to the customer to form, weld and finish.  Note: you can even see the 1/2″ tick marks to indicate the bend line location.

Supra Radiator ShroudTEQ radiator shroud

Here we have a house sign being fabricated out of some 1/8″ 304 stainless steel sheet.  The customer chose the custom font and determined the overall size.  First the part is cut out on the CNC table, then the backside was lightly brushed and the corner areas were prepped for welding the 5″ stainless steel rods.  The rods will be slid into the wall and secured with construction adhesive, ultimately allowing the sign to float from the wall 1-2″.  Clamping here may seem overkill, but the more work spent now means less work sanding the front.  Reason being is that stainless steel warps very easily and with having a perfectly brushed front surface, any uncontrolled warpage from the backside will make that much more work sanding the front.  The polyimide tape is heat resistant tape and also protects the backside from unnecessary scratches.

TIG weld house sign

Here’s the front side, the HAZ (heat affected zone) is very minor and will brush out quite easily.  The stainless is wiped with isopropyl alcohol to avoid any oils or contaminants to come into contact with the sanding belt.  The belt also never touches or sits on anything, unless it’s clean stainless.  No need to grind in contamination which will only show up over time when the sign is exposed to the elements.  Also by “coincidence” the dowels have the perfect spacing that it can drop into the fixturing holes of the table.  Which makes sanding that much easier as no clamping is needed and there is 100% access to the entire top surface of the part.

Stainless Steel house sign

And this is what it looks like when it’s done.  No signs of welded dowels and they are spaced wide enough to make the sign sturdy, but also narrow enough that they’ll be fairly hidden when the sign is floating a few inches from the wall.

brushed stainless house sign mint design saskatoon

These projects make me sad, however I do get joy and satisfaction when it’s done and I can see how happy it makes people feel.  This was CNC engraved, plasma cut out of 1/4″ 304 SS plate and the use of some 1/2″ stainless steel rod.  The rod is TIG welded and allows the cross to be buried in the ground and secured in place with concrete and lightly covered with dirt.  It is not blank after “Baby” and “October”, it blurred out for privacy.

2014-06-27 17.32

Powder coating…where do we begin!  Did some really cool script font lawn ornament in 10ga steel which was powder coated in Desert Charcoal (same as The Can Carabiner).

TIG welding and powder coating

Then we got these 7M-GTE parts in needing to be degreased, blasted, baked, blasted and then powder coated.  There is quite a bit of prep work required as anything that is cast and has been around oil just requires that much more work to ensure a quality finish.  Powder coating is the easy part, it’s all the work prior that takes the time.

7M-GTE powder coat

Once again our favorite tape around the shop.  Polyimide tape, heat resistant and leaves no residue.  Super useful as we use for everything from powder coating to welding.  And it kind of makes everything look like it’s meant for NASA.  These parts are all masked, trimmed, plugged and ready to go.

Supra powder coat

Notice the pin holes in the masking, this prevents plugs from popping out in the oven and just allows the part to “breathe”.  This intake manifold is ready for the powder to be applied.

intake manifold powder coat

All the finished parts.  The wrinkle black and desert wrinkle white turned out awesome!

Supra engine powder coat wrinkle black powder coatwrinkle white powder coat Supra coolant fittings powder coat

Coming soon…Cadillac 304SS exhaust system, our Arduino project powered by Newark Electronics, some custom steel crates and much much more!  If you like what you see please subscribe to our mailing list and you will be able to get up to the date content in your mailbox, just click on the “Follow” tab at the bottom right of your browser.  If you are interested in any of our services please take a minute to browse our site and contact us if you have any questions or would like to discuss a future project.

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