How To Remove Mill Scale

Using one of the oldest tricks in the book, vinegar, I'll show you how to get a smooth finish on steel plate without effecting the underlying steel.
Products used in this video:
30% Concentrated Vinegar - amzn.to/3AmghrL
45% Concentrated Vinegar - amzn.to/3R4S4My
Dewalt Cordless Grinder - amzn.to/3ycpBMr
Magnetic Chuck - amzn.to/3AotIYm
4 1/2" Wire Wheel Brush - amzn.to/3P0BCuY
Scotch-Brite Clean and Strip XT Pro Disc - amzn.to/3R9rCRZ

[@txtoolcrib]

Products used in this video:
30% Concentrated Vinegar - amzn.to/3AmghrL
45% Concentrated Vinegar - amzn.to/3R4S4My
Dewalt Cordless Grinder - amzn.to/3ycpBMr
Magnetic Chuck - amzn.to/3AotIYm
4 1/2" Wire Wheel Brush - amzn.to/3P0BCuY
Scotch-Brite Clean and Strip XT Pro Disc - amzn.to/3R9rCRZ

[@swolebro]

I've done exactly that with some 6x10" slabs of 1" plate. They take forever to heat up properly, but if you drop a steak on that, 15-20 seconds per side, let it rest for a minute, then repeat a couple more times until the internal temperature is 127F, you get something magnificent. Similar results to sous vide, but a far superior sear (obviously) and the texture inside has a bit more structure than when you cook it for 2-4hrs in a water bath. Good stuff, man.

[@JCtheMusicMan_]

A mild phosphoric acid solution also works well for removing heavy rust. However, I once used too strong a solution on a rusty tool for too long and when I returned the entire tool had dissolved 😅🤣

[@txtoolcrib]

That is precisely why I use a weaker acid.

[@Veldtian1]

😆

[@aldomaresca9994]

Thanks for the tip!

[@malkavsez69]

Thank you for the video. I can see the tool marks of the wheels. I'm curious how obvious are they if you were to powder coat after?

[@user-ff1hn7ve9e]

Try a flap disc for a smoother finish😉

[@FreddyFunderbunz]

I like using vinegar cause I like to take little sips of it 😂

[@dandyscorner]

I noticed you put the part on a different table attached to your main table when grinding. Is that a different type of table? Magnet maybe?

[@dwarnermg]

I use strait vinegar for rust removal but it has to be in a well ventilated area because it generates hydrogen gas.

[@itsdarkest]

Will it also remove any bits of slag or silicon left on steel after welding?

[@user-bn4hr1cz1u]

3:08-4:31 steel mill scale asmr

[@malaquiasselvagem4397]

Is a lid necessary?

[@stevenespinoza7735]

how would you do a 4ft x 4ft sheet

[@arisskarpetis]

Maybe be vinegar in gel form. It exists for descaling shower panes. Or cover the steel plate withe rags soaked in vinegar, probably on a sheet of plastic.

[@tylermcgonigal6031]

I tried those discs but they wear out so fast it’s just not economical to use ‘em

[@dwarnermg]

I’m partial to the $9 ones at home dipo

[@waynec369]

Hydrochloric acid (aka muriatic acid) gets it done in a few minutes - not hours. Bicarbonate of soda & water neutralizes. Rinse well, dry, then prime/paint. No need to beat around the bush when you've got $h!% to do.

[@txtoolcrib]

It also rusts everything the gas comes in contact with.

[@lastchance8142]

Muriatic Acid...15 minutes

[@txtoolcrib]

Not in a shop. Muriatic acid fumes will rust any ferrous materials the fumes come in contact with.

[@FreddyFunderbunz]

@@txtoolcrib exactly. I rusted every single pc of bare metal inside my shop just by pouring maybe 8oz of muriatic acid on the floor. What a nightmare