[AT] Sandblasting

Sun Apr 10 17:45:42 PDT 2016

Yes Mike like that one or a cupped one.  Made for side grinders, not for 
drill motors.
And thanks, I intended say face shields and protective clothes are 
necessary.  Once
in a while a piece of wire will break, fly out and stick in you if you don't 
have on heavy
clothes but if properly used they do a good job, quickly and inexpensively.

Charlie

-----Original Message----- 
From: Mike M
Sent: Sunday, April 10, 2016 5:20 PM
To: Antique tractor email discussion group
Subject: Re: [AT] Sandblasting

I don't think Charlie is talking about a regular wire wheel like you put
in a drill chuck, I think he was talking about one of these; they are
nasty and eye and hand protection is a must!!

MIke M

On 4/10/2016 4:03 PM, rlgoss wrote:
> For what you are doing, I prefer a needle scaler. Harbor Freight has two 
> models for sale. Both work well but are noisy and take a lot of air. 
> Paint, scale, and rust drop off close to the object you are cleaning. Less 
> than $70 for the big one. No environmental hazzards, no dust, no fuss.
> Larry
>
>
> Sent from my Galaxy Tab® A-------- Original message --------From: Dennis 
> Johnson <moscowengnr at outlook.com> Date: 04/10/2016  2:42 PM  (GMT-05:00) 
> To: Antique tractor email discussion group <at at lists.antique-tractor.com> 
> Subject: Re: [AT] Sandblasting
> Charlie
>
> Tried the acid first. Did fair, but not great. Not sure wire would've do 
> as well getting mill scale off any the rust in the pits on the pipe.
> Now that I have a pressure blaster working it is going a lot faster and 
> result is a "near white metal blast" as I recall.
>
> Thanks
> Dennis
>
> Sent from my iPad
>
>> On Apr 10, 2016, at 11:31 AM, charlie hill <charliehill at embarqmail.com> 
>> wrote:
>>
>> A good wire wheel on a side grinder will give you good results a lot
>> cheaper and probably faster than sandblasting it unless you had access
>> to some professional grade blasting equipment.  If the rust is just loose
>> surface rust and not caked on you can get good results by painting it
>> down with some phosphoric acid, rinsing it off and letting it dry.  Then
>> paint.
>>
>> Charlie  (over 20 years experience in the sand blasting and industrial
>> painting industry)
>>
>>
>>
>> -----Original Message-----
>> From: Dennis Johnson
>> Sent: Saturday, April 09, 2016 9:33 PM
>> To: at at lists.antique-tractor.com
>> Subject: [AT] Sandblasting
>>
>> I am making a holder for some 4' X 8' banners to advertise various church
>> events. Will mount in ground so it can be seen from the road. I got some 
>> old
>> 1 1/2" pipe and welded it up. Then I tried to blast the rust and scale 
>> off
>> of the pipe so I could prime and paint it.
>> I had an old suction type blaster, that seemed to work fair for a few
>> previous projects. It started working fine for this, and then quit 
>> working.
>> I replaced the blast gun, and it blasted about 6" of pipe and quit.
>> I got frustrated and went out and got a 40 pound pressure blaster from
>> Harbor freight, plus another air compressor. I have one compressor that 
>> is
>> about 6  or 7 CFM with a 30 gallon tank. Found another "free" compressor
>> that is a real small compressor guessing about 2 CFM but was mounted on a 
>> 60
>> gallons tank. Found Harbor has a compressor sale with one that was $179
>> after $319 off (something my wife can understand) so I got that. It is 4 
>> or
>> 5 CFM with a 20 gallons tank. Got all of these connected together and 
>> have a
>> small discharge manifold I put on my shop wall.
>> Got the blaster assembled, put some sand in it, and it did terrible, 
>> barely
>> blasting. Finally figured out the sand I had was contaminated with small
>> rocks that plugged things. (Probably also the reason the suction blaster 
>> was
>> not working). Went and got some insect screen, and used it as a sieve to
>> screen out the rocks from the sand. Put in the the fresh sieved sand, and
>> the blaster started working like it was supposed to. Worked great for a 
>> bit,
>> and then blew of blast hose. Short trip to parts store for new clamps, 
>> and
>> then it was working great again. Guessing a 50 pound bag of play sand 
>> will
>> blast 10 to 12 feet of pipe.
>> After I get this blasted I need to fix a few things on the blaster like
>> disassemble and rotate the handles that came installed backwards.
>> Anyway I am happy that I now have a blaster that works great, plus enough
>> compressors and tanks to blast about 5 or 6 foot of pipe at one time, and
>> then shut down the blaster and prime that section while the compressors
>> catch up.
>> Grit would be better, but this sign holder is about 10' high, with two 
>> sides
>> that are about 10' long spaced at 90 degrees, so the outside pipes are 
>> about
>> 16 foot apart. Point is that it is too big to blast where I can save and
>> recycle the grit and sand is cheaper.
>> Sent from my iPad
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