I understand the idea of heating it in the BBQ---- however once the oil gets hot it starts oxidizing and turning to carbon and it might lodge in the pores and then become impossible to remove. I like the idea of boiling water and a soap solution...... If I turn the oil into carbon it will be like th...

I used to see my dad anneal high carbon tool steels by heating them to a dull red and then quickly burying the part in the center of a bucket of powdered lime. The lime forms a heat proof insulating material which is a make shift substitute for being in a heat treating oven set to slowly ramp down. ...

I use lime away--- I guess a less strong acid than muratic....

OH- ps..... Try fileing the edges of the aluminum with a fine file ( aluminum only file) File them so smooth that you cant see ANY texture. should look all most polished. your backside looks a little dirty. (like the bears on the toiletpaper commercial :lol: ) Any texture AT ALL left in the edges le...

When I was in school --- I got into the habit of cutting pieces for practice that were like 1 by 3 inches--- just to keep from wasting material and so I could do a bunch in one cutting.(was 1/8 or 3/32) What I later understood---- was that small of a part is overheated by the time you have done a si...

has anyone found a source for 1 or 2 lb. containers of the new 4943 filler ?
(or also the 4047 either)

It would corrode before I used 10 lbs. ......

Thanks,
Tim

I have a critical weld to make on an aluminum casting. It is about 90 years old. It has been saturated with oil and fuel for most of that time. It has several cracks through it that need to be repaired. I am thinking that the cleaner the casting can be made to be-- the easier the welding and the mor...