Your ideas for a shop made O/A hand truck?

[erikmannie]

Not only dangerous, but being in a welding environment it would be filthy as soon as you started grinding, sanding, etc.. I used a hightemp, ceramic based engine clear-coat over a diluted gun bluing finish on my recent workbench project, and it seems like it will hold up well. Mike

I would be interested to know the brand of gun bluing finish, how much you dilute it, & may I assume that the aforementioned clear-coat is rattle can?

 

[erikmannie]

Regarding metering the joints ..

Personal choice, material allows for easier full penetration but now more filler needed.

With thin material this may not be needed.

This is why I suggested practice.

You have been doing so for other process, lesson learned here applies there.

Full thickness is also easier to clamp.

C-Clamp across the joint holds in perfect alignment.

Do not get in a hurry as it can warp if you try to complete a joint in one pass.

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I really need to buy some C-clamps large enough for this task. I have none now.

My last gas welding project was converting a bed to a bench: 100+ year old mild steel that was 5-15% corroded, .050”-ish wall round tubing painted with (probably) lead-based white paint. What a pleasure it will be for me to weld on clean new 3/32” steel!

Thanks for reminding me to practice right before the project. I can practice butt & fillet welds on the leftover square tubing, & then seeing how penetration was achieved on these practice welds.

 

[erikmannie]

I realized that I already have bicycle tires & tubes here. The tires are 26” diameter & 5.25” wide knobbies. Obviously, I will use these since they are already here & paid for.

Now I just need 80mm rims. One idea is to buy rims with cutouts in them, & use 1 green & 1 red rim strip since it is an O/A cart.

Like this:



If there is a concern about spatter getting on there & burning the tube, one can use colored tape instead of a proper rim strip. I’m sure they make colored, high temp tape. Does anybody have a safety concern about using a rim strip? They are thin but tough. They also happen to be very inexpensive.

 

[erikmannie]

On second thought, it is better to have aluminum there than a rim strip. I will just use solid aluminum rims.

 

[FOMOGO]

I used Birchwood Casey Super Blue. I got the large 32oz bottle because I plan on using it on other large projects, but it goes a long way so you might want a smaller bottle. How much you dilute it depends on the look you want. I would use it straight on a test piece, and dilute to taste. You want to get rid of all the mill scale first, and neutralize after application. The clear is made by Dupli-Color, and is rattle can. Mike

I would be interested to know the brand of gun bluing finish, how much you dilute it, & may I assume that the aforementioned clear-coat is rattle can?

https://www.amazon.com/Birchwood-Casey-Super-Liquid-Ounce/dp/B00162QGV8/ref=sr_1_14?crid=1GFKYUAZY1S4F&keywords=super+blue+gun+bluing&qid=1668278390&sprefix=Su%5Ber+Blue%2Caps%2C192&sr=8-14

 

[tq60]

You only need a c clamp big enough to clamp the sides of the tube together,

Imagine the line of the interface between the 2 tubes.

Place c clamp so the line splits the faces of the clamp.

For clamping the parts together get some BAR clamps.

These are inexpensive and in assorted lengths.

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[erikmannie]

I bought solid (i.e. flat proof) tires. I chose red tires to remind myself to work safely. They had a 56% off sale so it was $83.98 for both tires including tax + shipping. I have installed these on a rim; it is frustrating & time consuming.

Razorblade: 26"x1.75"

Tannus airless bicycle tires are puncture proof bike tires that don't go flat. Bike tires that are solid and made out of a lightweight foam that will last long

tannusamerica.com

 

[erikmannie]

I also bought red rims. I have to wait until I have rim + hub in hand before I take measurements to determine the spoke length.

With the fighter jet configuration of the cylinders & the red tires, this cart is going to look ridiculous.