Stripping Frame and other metal ...

[tdavis]

I have my jeep down to the bare frame, and in doing some research on the best way to clean the frame, I came across these chemicals available at Home Depot:

Lye (close to it, anyway) = Zep Crystal Clog remover ZCRY2 - $5.99 for 32oz. - there is a whole discussion on this over on the "G":
http://www.g503.com/forums/viewtopic.php?t=14836

Phosphoric Acid (metal prep) = Zep Shower Tub and Tile Cleaner - $6.88 for a Gallon

Went to the Zep site and looked at the MSDS info to verify.

You can also buy lye here:
http://www.bestdeal.org/Merchant2/merchant.mvc?affiliate=candlesoap&Screen=CTGY&Store_Code=Essential&Category_Code=277

Just thought I'd pass the info along. I am planning on getting the frame down to bare metal and then using POR15, primer, and then Gillespie.
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Troy Davis
1953 USMC M38A1 (Work-in-progress)
Rebuild Blog: http://troy-m38a1.blogspot.com/

[OKCM38CDN]

Have it sand blasted, lot less trouble than those chemicals.

Then it is ready to primer and paint...

Hope this helps...

[north-shore]

Hi

Me too i sand blasted here a pic




Nice hein

[tdavis]

What aout inside the frame rails where they are boxed in? You can't get inside there with a sand blaster.

Also, I was thinking for the small parts - like the transmission cross member, the voltage regulator plate, the master cylinder heat shield, all of the brackets, nuts, bolts, footman loops, wheels, bumperettes, etc. that it may be easier to put them in a basket in a bucket of lye solution and then rinse them the next day - no fuss. Then just pour the lye solution down the drain - it's just drain cleaner after all.
_________________
Troy Davis
1953 USMC M38A1 (Work-in-progress)
Rebuild Blog: http://troy-m38a1.blogspot.com/

[OKCM38CDN]

I got a small blaster from harbor freight for $100 and blast all my small parts... got a presurized blaster for a few bucks less and do the larger ones. Just remember to get a big enough compressor...

As for the portions inside even your lye cannot get the rust out of there...

your choice... just giving options...

[ocwd]

What size compressor tank is needed to run a small sand blasting cabinet?

Thanks,

Dave

[north-shore]

Hi

I have a 7hp whit 60 gal work ok

[LeeG]

I used a pressure washer with a "turbo" nozzle (works 500% better than any regular spray tip, i use it on concrete and it just peels rocks out of the concrete that otherwise aren't even seen) and then sprayed the frame with some aircraft paint remover (the kind in the spray can from the parts store). Then pressure washed it again and the frame was all shinny metal for about 2 weeks. I let it set out in the wheather so that some surface rust could occur since this is recommended by POR-15 for POR-15 to bond correctly. Then I sprayed it with a spray bottle filled with "Metal Ready" from POR-15 and rinsed with a water hose and let dry for a day. Finally put the POR-15 rust preventative paint on with a 3" brush. End result looked really good.

I did all this because I enjoy doing things myself and don't have a sand-blaster handy.[/img]
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1953 M38A1 F-Head

[ocwd]

Lee,

That sounds super messy. I was planning on having my frame sand blasted then using metal prep prior to primer coat. I have a 3.5 HP compressor with a 35 gallon tank. I wonder if that will run a small blasting cabinet. I'll have to see what the manufacturer suggests.

Dave

[north-shore]

HI

That what i have before but was to demanding could do to muchs that wy the new compressor and i prefer using glass it beter then sand


If you could put a tart essayer to clean after

[LeeG]

It really wasn't that messy. With the turbo nozzle on a good high pressure washer there is a lot more force in a smaller area. It almost just peels paint and dirt away. I was quite pleased with the results.
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1953 M38A1 F-Head

[ocwd]

North Shore,

You say you use glass beads on small parts? What do the glass beads cost as opposed to sand? Can the sand and or glass beads be recycled after each use? Are you saying that your 3.5 hp 35 gal compressor could not run the blasting tank?

Lee,

It's good to know that there are alternatives to sand blasting. I think i'll go the blsting route. There will be plenty of work for me to do after that is complete.

Dave

[LeeG]

Yes Dave, there are alternatives. I have even used this same method on my hood except I had to use paint remover first because it had 4 layers of different color paint on it. There are only 2 shops in my town that do sandblasting and that is all they do. No walnut or any other type of media blasting in town. I used the paint remover once between each coat with the turbo nozzle until I finally got down to the original OD green which was too tough for the pressure washer. I used a 50grit gator pad on a DA orbital sander where needed after that.
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1953 M38A1 F-Head

[north-shore]

Hi

Glass is a lot better on all parts and 2 or 5 dollars more a bag and for your compressor is ok but for a frame is really demanding on your motor

For the recycled glass don't come weat and easy to recycle and if the bag is open it don't get weat

[OKCM38CDN]

My compressor ( 3hp / 21 gallon) works with my blasting cabinet... but a larger one would work better... I use sand as I can get it for a couple of dollars a bag, I keep it in used kitty litter bins; stays nice and dry...

I blast all the small parts and if I need to strip then I use a dip tank(14 gallon Rubbermaid tub)...

I got my cabinet at Harbor Freight for about $100 on sale...

Hope this helps...