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Home made sandblaster

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Luke

12-08-1998 03:59:17




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I would like information and design specifications to build myself a portable sand blasting unit,to run off a 16cfm compressor.




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Drueke

04-30-2001 23:10:50




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 Re: home made sandblaster in reply to Luke, 12-08-1998 03:59:17  
I was just wondering about static. When I installed a dust collector in my shop, I had to ground everything against static buildup in the hoses. What this had to do with sandblasters only occured to me when I was looking into building a sandblaster and found out that static can build up on some materials as they are blasted.

What I was wondering is: has anyone ever had trouble with static in the hoses or on the pieces while blasting?

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Jim Smith Ft wayne

12-23-1998 07:21:58




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 Re: home made sandblaster in reply to Luke, 12-08-1998 03:59:17  
: I would like information and design specifications to build myself a portable sand blasting unit,to run off a 16cfm compressor.


I use a 38-special gun from TIP. Works incredibly
well, Many hundreds of lbs of sand thru it. Very
durable unit, well worth the money



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judy degroff

09-10-1999 11:04:01




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 Re: Re: home made sandblaster in reply to Jim Smith Ft wayne, 12-23-1998 07:21:58  
I would like to know how to build a sandblaster at home.



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Jim

12-09-1998 10:48:16




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 Re: home made sandblaster in reply to Luke, 12-08-1998 03:59:17  
Get a TIP catalog and study their sandblasters. www.tiptools.com. I am currently building a sandblaster from the top half of an argon cylinder. I estimate the whole thing including 15' of blast hose(from TIP), plus nozzles from Harbor Freight...will cost me $160. Also will get a hood and maybe a respirator from TIP.



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doug

12-08-1998 06:50:34




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 Re: home made sandblaster in reply to Luke, 12-08-1998 03:59:17  
: I would like information and design specifications to build myself a portable sand blasting unit,to run off a 16cfm compressor.

try www.tiptools.com to size the nozzle,
check h.p.numbers as well, 16 cfm sounds like a 5 h.p. 2-stage full blast. may want to shoot
for 10 cfm to account for nozzle wear.
anyhow tip knows what to recommend.
i am going to assume this is going to be
a pressure blaster, not a siphon unit?
what are you using for a tank?
i have run a 600# pot using a 1/2" nozzle
that takes all of a 150 cfm jackhammer
compressor. then ran my friends 1/8"
nozzle off his 5 h.p. garage compressor.
i was quite impressed with the speed even with
a 1/8" nozzle, so i am in the process
of building my own, using a acetylene bottle.
upside down, they have the funnel on top for
loading, and the bottom tapers as it should
for sand flow. just need the hose and wheels
to finish.

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Sparky AKA Crispy.....

12-12-1998 20:51:43




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 Re: Re: home made sandblaster in reply to doug, 12-08-1998 06:50:34  
Just curious, how does one cut and weld on an acetylene tank without becoming another statistic or shop safety poster child? And is there really Cork in an acetylene tank like the textbooks say, or is that something they made up just to see if we would beleive it?

I'm using an old hydraulic oil tank from an inground lift... Cut it with sawzall and drill, and will reverse the top to create a funnel. A friend used a regular air tank, and his funnel with a built in screen screws on instead of the cap...

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doug

12-14-1998 11:46:41




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 Re: Re: Re: home made sandblaster in reply to Sparky AKA Crispy....., 12-12-1998 20:51:43  
dear crispy,
i drilled a 2 1/2" hole in the bottom with a hole
saw and lots of cutting oil. then proceded to dig
(3 days) out the stuffing. this is an old one
and had asbetos cement in it(i used lots of water). i hear new ones
have cotton batting. i then power washed it out
real good. btw acetone is present in the cement,
and when i was thru washing, i could not smell
any acetone. also btw your hydraulic cylinder
will probably start to sweat out oil as you
weld on it unless you steam it. i had this problem with a gasoline storage tank that was empty
for 5 years and full of water, it sweats out
of the pores when heated.
also be sure your container is going to be thick
enough for the pressure you want to run.
the acetelyne bottle has a nice bowl on the bottom,
so when i turn it upside down, it is a nice
filler funnel, and the top (now the bottom)
has the nice curve as well for sand flow.

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john

12-28-2001 01:41:36




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 Re: Re: Re: Re: home made sandblaster in reply to doug, 12-14-1998 11:46:41  
doug How do you control the sand flow in a pressurised blaster when both sides of the unit are pressurised the same and the blast side has a nozzle fitted i found a back pressure stoped the sand flow



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Scottie

07-17-2004 13:32:09




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 Re: Re: Re: Re: Re: home made sandblaster in reply to john, 12-28-2001 01:41:36  
On lower end i assume you have a regulating valve. Start with valve closed and open valve slightly until air is discoloured by the grit .This is the best cutting setting. Pressure should be 60-100 psi. Open valve too much and grit will block flow. If pressure drops very low when you start blasting the nozzle size is too big in diameter relative to the compressor output. Hope this helps Hugh I have just browsed and found your site

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doug

12-14-1998 11:23:15




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 Re: Re: Re: home made sandblaster in reply to Sparky AKA Crispy....., 12-12-1998 20:51:43  
dear crispy,
i drilled a 2 1/2" hole in the bottom with a hole
saw and lots of cutting oil. then proceded to dig
(3 days) out the stuffing. this is an old one
and had asbetos cement in it(i used lots of water). i hear new ones
have cotton batting. i then power washed it out
real good. btw acetone is present in the cement,
and when i was thru washing, i could not smell
any acetone. also btw your hydraulic cylinder
will probably start to sweat out oil as you
weld on it unless you steam it. i had this problem with a gasoline storage tank that was empty
for 5 years and full of water, it sweats out
of the pores when heated.
also be sure your container is going to be thick
enough for the pressure you want to run.
the acetelyne bottle has a nice bowl on the bottom,
so when i turn it upside down, it is a nice
filler funnel, and the top (now the bottom)
has the nice curve as well for sand flow.

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