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[05omegav6]

You can't be a mad scientist the master wearing a full mask.  That's just Dazzle

Fixed

[chrisgixer]

Of course with all that oppsing about getting the welder working, it promptly ran out of wire just as I got it sussed. Sigh...

Off to the a local welding supplies. Other side of Not Reading. Ask for wire, oh, yes. This one? 20kg. Er looks a bit big, not sure that will go on. Got anything smaller? Er.....

Off to the internet. Halfords of all places. Round the corner from my house On arrival they have a good range of supplies, which surprised me, from small gas bottles to masks. And wire.


Good job I went for the smaller roll. The holder spindle is plastic, not convinced it would take 20kg.

But all up and running again.

[aaronjb]

FWIW 2woody did all of the plasma cutting on the Jag with just sunglasses on..

[chrisgixer]

Hmmm. Thinking about it, I wear glasses. So would need to be a mask anyway, which won't go any lighter. (Its on its lightest setting already)

[chrisgixer]

Is it normal for the tip to stick to the work piece? It's not bad, just hinders a smooth cutting action occasionally.

If I set the mask to grinder, will that give enough protection for plasma cutting?

[Marks DTM Calib]

I use a set of shade 5 goggles, usually it will stick if you get metal between the tip and the steel so make sure the tip drags along the surface

[chrisgixer]

Thanks Mark.

And, I'm welding a painted part. Some of the welds have air pockets.

Is this the paint gassing up and causing bubbles in the weld pool?

[Nick W]

Welding on paint is best avoided. Electric welding in particular should be done on clean, shiny metal. Run the angle grinder along the joint before you start, and you'll get a much better weld for a lot less effort.

[chrisgixer]

Welding on paint is best avoided. Electric welding in particular should be done on clean, shiny metal. Run the angle grinder along the joint before you start, and you'll get a much better weld for a lot less effort.

Yeah I did that on the edges, but it looks like I should of done the sides as well. Plus, its two layers sanswhiched together, and there's paint in the gap.


I really didn't want to get the nitro morse out. Evil bloody stuff.

[Nick W]

Heat gun and a scraper/wire brush?

[chrisgixer]

Heat gun and a scraper/wire brush?

Ah, didn't think of the heat gun. Got one in the cupboard too.

[Andy H]

I prefer a wire cup brush on the angle grinder for getting back to shiny metal free of paint/grease/rust.

I have read that a flap wheel also works well but I haven't tried one yet.

[chrisgixer]

I prefer a wire cup brush on the angle grinder for getting back to shiny metal free of paint/grease/rust.

I have read that a flap wheel also works well but I haven't tried one yet.

Yeah its an irregular surface, rotary tools can't get in the ledge so well. Ordinarily a disc type tool would do.

[chrisgixer]

Cranked the plasma up today. Bit of practice and grinding the top surface of the metal to give a good contact and it cuts 8mm steal without too much bother. although I want convinced it was capable of 8mm to start with.
 New tip internals, scouring the metal, a perfectly vertical torch angle and slooooow cut rate keeps the tip clean and gives a clean cut.

But the question is, re tip internals, the internal part looks reversible. Or double ended. Can it be turned round and both ends used? Or is it buggered and that's it?


....pic might help if needed.

[cem_devecioglu]

Welding on paint is best avoided. Electric welding in particular should be done on clean, shiny metal. Run the angle grinder along the joint before you start, and you'll get a much better weld for a lot less effort.

Yeah I did that on the edges, but it looks like I should of done the sides as well. Plus, its two layers sanswhiched together, and there's paint in the gap.


I really didn't want to get the nitro morse out. Evil bloody stuff.

paint stripper but dont touch with bare hand ..  then clean with celulosic thinner