Re: Sand Blasting vs. Wire Brush Grinder

Thu Apr 11, 2013 8:24 pm

just so everybody understands there is more than just sand to blast with a friend of mine use walnut shells so much nicer than sand

Re: Sand Blasting vs. Wire Brush Grinder

Thu Apr 11, 2013 8:26 pm

crazyjoe wrote:just so everybody understands there is more than just sand to blast with a friend of mine use walnut shells so much nicer than sand


Soda blasting,too

Re: Sand Blasting vs. Wire Brush Grinder

Thu Apr 11, 2013 8:45 pm

George Willer put a post up several years ago showing how he set up a tractor to be sandblasted, complete with photos.
I can't seem to find it anywhere.

Peter

Re: Sand Blasting vs. Wire Brush Grinder

Thu Apr 11, 2013 9:50 pm

I used an angle grinder with a cupped or straight brush, sometimes a drill with a small brush for tight spots. I always shoot bare metal with rattle-can primer (wipe with alcohol) the same day. It is slow and tedious, yeller Cubs are harder for some reason.

For big parts, separate from tractor, like fenders and wheels, either sandblast or electrolysis is a good way to go. I have a good sandblast guy and have taken loads to him, done the next day for a reasonable price. My rule of priming before I go to sleep can be a pain under such circumstances, but still a rule.

Not a fan of sandblasting anything with a seal or a bearing. Pieces are fine.

Re: Sand Blasting vs. Wire Brush Grinder

Thu Apr 11, 2013 11:09 pm

Spot on BW....die grinders work for tight spots with small wire wheel brushes

Re: Sand Blasting vs. Wire Brush Grinder

Fri Apr 12, 2013 6:43 am

Washing soda works well in the electrolysis tank, I would use that before the fake TSP.

Re: Sand Blasting vs. Wire Brush Grinder

Fri Apr 12, 2013 6:58 am

Buzzard Wing wrote:Washing soda works well in the electrolysis tank, I would use that before the fake TSP.

Absolutely! Dump a box of it in a 55 gallon drum and it will work great. All you are doing is making the water conductive and sodium carbonate ( NOT bicarbonate) or washing soda is a great electrolyte. The more conductive the water, the more current gets to the parts, the more current, the faster it works. It helps to have a beefy power supply.

I find that it loosens paint. Some spots stay a little stubborn.

With wire wheels, you will come in the house like a prickly pear cactus with broken wires stuck everywhere. once the clothes get into the wash, most of the wires will find your wife's most sensitive clothing if you know what I mean. Welding chaps are a good idea. I had to have a wire removed from one of my toes. Didn't feel it working its way in. The dust gets everywhere. lead paint dust is very dangerous, particularity for children.

Re: Sand Blasting vs. Wire Brush Grinder

Fri Apr 12, 2013 8:14 am

I used ALL the above. Take your time and do the prep right. You will be proud of the results, have fun :)

Re: Sand Blasting vs. Wire Brush Grinder

Fri Apr 12, 2013 8:57 am

Wow - you guys are all amazing.

Is this the correct Washing Soda - http://www.walmart.com/ip/Arm-Hammer-Super-Washing-Soda-Detergent-Booster-Household-Cleaner-55-oz/19407690 I'm questioning because it says detergent booster.

Lastly - please remind me again how you remove the black residue and control flash rust when removing the part. I've seen in this post rub with paint thinner - what do you all like best?

Re: Sand Blasting vs. Wire Brush Grinder

Fri Apr 12, 2013 9:14 am

Ken:

It is amazing the power of advertising.

Image

This is the same stuff in basically the same box that has been around for decades. Course now everyone knows that it has to be New and Improved or in this case a detergent booster to compete with Oxi-Clean .... :big give up:

As I have mentioned before many times over the years, TSP and TSP-Free or the DAP TSP that you bought will prevent flash rust. I don't know why or understand the science behind it, all I know is that it does do that. In my presentation on my Electrolysis rig, I show part of the blade that I was running through the tank. I finished all of those pieces but had a massive coronary before I could prime them. After a sextuple by-pass and the resulting convalescent period of over 6 months, it was July/August before I got around to priming. There was NO flash rust on any of the parts and they sat in my unheated shop all winter.

I use lacquer thinner to prep before I prime and then I use either red oxide primer or if I am doing a lot - dura build primer. If you use washing soda, then do as Larry says and prime before you call it a day or it will flash rust.

Hope that helps.

Re: Sand Blasting vs. Wire Brush Grinder

Fri Apr 12, 2013 9:20 am

Rudi - so if I read your post correctly this product will prevent flash rust?

DAP TSP.jpg


Ken
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Re: Sand Blasting vs. Wire Brush Grinder

Fri Apr 12, 2013 9:40 am

Lowe's may still carry REAL TSP. there are other chemicals that make the water carry electrical current, but the general consensus is that tsp is best as it affords some rust resistance till parts can be painted.

Re: Sand Blasting vs. Wire Brush Grinder

Fri Apr 12, 2013 10:03 am

Lowes does still have it.

http://www.lowes.com/pd_151379-91-10622_0__?productId=3014065&Ntt=tsp&pl=1&currentURL=%3FNtt%3Dtsp&facetInfo=

Re: Sand Blasting vs. Wire Brush Grinder

Fri Apr 12, 2013 10:11 am

Buzzard Wing wrote:Washing soda works well in the electrolysis tank, I would use that before the fake TSP.

Fake TSP is washing soda, at least any brand I have seen.

Re: Sand Blasting vs. Wire Brush Grinder

Fri Apr 12, 2013 10:13 am

When this was discussed several years ago, some states "outlawed" the sale of real TSP.

Peter