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Sand/Bead Blasting...

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LarryNeohiocase

02-04-2008 06:05:29




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I'm just about ready to sand/bead blast my Case DC and I have a couple of questions. This will be my first attempt and I just want to make sure that I do this correctly.

First of all sand or bead? Which would provide me the better results. I will be using a pressurized unit for the "core" part of the tractor and a bead blast cabinet for the smaller parts.

Secondly. With the bolt on items removed, manifolds, starter, magneto and so on, what is the best way to keep the blast media from getting inside where it shouldn't?

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wedge40

02-15-2008 05:25:08




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 Re: Sand/Bead Blasting... in reply to LarryNeohiocase, 02-04-2008 06:05:29  
For large areas what about covering the holes with 1/4 hardboard.

Wedge



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B. L. Taylor

02-14-2008 11:45:11




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 Re: Sand/Bead Blasting... in reply to LarryNeohiocase, 02-04-2008 06:05:29  
Well Larry here's my two cents. You mentioned duct tape for masking. Get ready to clean the glue off of whatever you mask. 3M makes an excellent masking tape and is not all that expensive. Two layers should stand up to the previously mentioned shop blaster. 3M also makes a thicker tape that will stand up to light hits with a 24 grit grinding disc. All available at the local paint and body supply, maybe the auto parts store if you're in a small town.

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circus

02-05-2008 07:57:44




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 Re: Sand/Bead Blasting... in reply to LarryNeohiocase, 02-04-2008 06:05:29  
Truckers use sheets of rubber to prevent sliding loads. These rubber sheets work great protecting while blasting. Cheap too



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LarryNeohiocase

02-05-2008 08:43:54




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 Re: Sand/Bead Blasting... in reply to circus, 02-05-2008 07:57:44  
Nice idea. I actually have some heavy truck mudflaps laying around that I can cut for the sizes needed...
Thanks



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circus

02-06-2008 08:37:34




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 It's 1/16 thick and cuts with scissors in reply to LarryNeohiocase, 02-05-2008 08:43:54  
It's 1/16 thick and cuts with scissors



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LarryNeohiocase

02-06-2008 08:39:41




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 Re: It's 1/16 thick and cuts with scissors in reply to circus, 02-06-2008 08:37:34  
Circus,
I'm gonna have to look into that. Sounds much easier to work with than what i was gonna use. Any ideas on a source?
Larry



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Den N Ms

02-11-2008 07:27:28




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 Re: It's 1/16 thick and cuts with scissors in reply to LarryNeohiocase, 02-06-2008 08:39:41  
Use a piece of an old tire inner tube it works great.



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LarryNeohiocase

02-11-2008 07:53:48




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 Re: It's 1/16 thick and cuts with scissors in reply to Den N Ms, 02-11-2008 07:27:28  
Hey that's a great idea. Thanks!!!



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circus

02-06-2008 10:04:11




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 Re: It's 1/16 thick and cuts with scissors in reply to LarryNeohiocase, 02-06-2008 08:39:41  
trucker friends, truck repair shops probably has some laying around, swap meets. When I don't need any they're every where. When I do they're no where.
PS protects hyd rams too
PPS Spring wood clamps (giant cloths pins)keep rubber in place well.



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LarryNeohiocase

02-06-2008 10:20:45




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 Re: It's 1/16 thick and cuts with scissors in reply to circus, 02-06-2008 10:04:11  
Thanks. I'll start looking



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neblinc

02-04-2008 07:23:16




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 Re: Sand/Bead Blasting... in reply to LarryNeohiocase, 02-04-2008 06:05:29  
I think sand will be more aggressive than the bead media. With that said, sand contains silica which is bad for you, most here would recommend a suppled air system if you are going to do it.

Also the consensus of most people is not to blast anything that will allow media to penetrate into openings like seals, bearings etc. It will find a way in no matter how careful you are.

Randy

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larryneohiocase

02-04-2008 10:28:25




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 Re: Sand/Bead Blasting... in reply to neblinc, 02-04-2008 07:23:16  
Randy,
Thanks for the input. I work in a hazardous waste/environmental clean up field so SCBA isn't a problem. I wear those suites several times a year for work.
Larry



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B-maniac

02-04-2008 16:56:40




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 Re: Sand/Bead Blasting... in reply to larryneohiocase, 02-04-2008 10:28:25  
Blasting got a bad name mainly because of people taking their tractors to a commercial blaster that usually blasts tanks and industrial equipment using gas or diesel powered large volume compressors with 2" or larger hoses and lots of pressure usually using screened pit sand (not sharp). These things will blow holes in duct tape or anything else you use to mask with. Using your normal body-shop or hobby 100lb. cap. pressure blaster with no more than 80-90psi , you will not have a problem with sand getting where you don't want if you use any common sense at all as to how you mask (AND unmask)

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LarryNeohiocase

02-05-2008 05:28:06




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 Re: Sand/Bead Blasting... in reply to B-maniac, 02-04-2008 16:56:40  
Thanks. That was kinda what I was thinking. I'm was thinking that a combination of something filling the openings and a good layer of duct tape, and as you said a healthy dose of common sense, I would hope the a good end result with no damage should be possible. I just wanted to get comments/insight from guys that have more experience...
Thanks



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Mike Hunter

02-06-2008 20:54:47




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 Re: Sand/Bead Blasting... in reply to LarryNeohiocase, 02-05-2008 05:28:06  
Prep takes more than one approach to get it right, blast to bare metal or blast just the loose stuff? How much time do you have? The little stuff in the cabinet and the big stuff outside. Ashort cut? on blasting us solvent first. wipe dry than blast. Mike



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LarryNeohiocase

02-07-2008 03:12:29




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 Re: Sand/Bead Blasting... in reply to Mike Hunter, 02-06-2008 20:54:47  
Mike,
I'm thinking to get a good paint job done it'll have to be to bare metal. And I'm not in a hurry, it's not like i have a deadline or anything. Just redoing this tractor to save it from the scrap yard and so that someone else can add it to thier collection.
Larry



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