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Old 07-24-2012, 12:53 PM
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Blast media

Been using a grinder with different size and types of wire brushes to clean up the frame and get it ready for paint. There are spots where the brushes just won't go. I have a Northern blast rig and want to know what do you recommend for blast media? I will be blasting outside if that matters. Thanks.
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Old 07-24-2012, 01:02 PM
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For a frame I'd go with sand or use a needle gun.
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Old 07-24-2012, 01:55 PM
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yeah... probably sand.
its cheap and a good choice for out doors.
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Old 07-24-2012, 02:54 PM
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Use sodium bicarbonate/or blasting soda...it will help keep me in a job..

Simply melts away outside..
I wouldn't do it on the lawn tho.

J20 project
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Old 07-24-2012, 03:42 PM
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Sand is bad for your health. Silicosis. http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001191/ Coal miners get a form of silicosis called black lung.

Slag (black beauty) may be the cheapest media that's not dangerous.
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Old 07-24-2012, 04:08 PM
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Quote:
Originally Posted by tgreese
Sand is bad for your health. Silicosis. http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001191/ Coal miners get a form of silicosis called black lung.

Slag (black beauty) may be the cheapest media that's not dangerous.

I would say any form of media blasting is not good to inhale. Your not just inhaling the media but the material being removed also. In any case I would wear a respirator or good mask.
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Old 07-24-2012, 05:47 PM
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I'm pretty sure mine after checking from HF is soda.

Inside or outside it just vacums up. A resperator is require for all blasting no brainer. it works real well on frames & other needs.
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Old 07-24-2012, 08:32 PM
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Quote:
Originally Posted by tgreese
Slag (black beauty) may be the cheapest media that's not dangerous.
Black beauty is a northern product and works very well for stripping paint without much stress on the metal; I have used it and like it.
I have used play sand from Lowes, also, that is pretty fine but is adequate for moderate dirt, paint,and rust.
You can check Eastwood.com blasting supplies and find a chart that they claim shows which media does the best job of doing each chore.
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Old 07-24-2012, 09:04 PM
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Tractor Supply has 50lb bags of sand blasting grit for about $7 and change. Works pretty good but wear ear, eye and mouth protection along with long sleeves, that stuff gets everywhere! Make sure you've got a good, dry air supply. Maybe it's just my setup (TSC siphon gun) but the slightest bit of moisture in the sand or the air and the gun performs like poo.
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Old 07-24-2012, 09:10 PM
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Quote:
Originally Posted by J20 project
Use sodium bicarbonate/or blasting soda...it will help keep me in a job..

Simply melts away outside..
I wouldn't do it on the lawn tho.

J20 project

If I'm not mistaken bi-carbonate is a milder media used for paint and is not that great for tough rust usual found on the frame. I would stick to sand, and use a respirator.
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Old 07-24-2012, 09:14 PM
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also check on youtube to get an idea of how the different medias work. There are some good examples on there
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Old 07-24-2012, 09:44 PM
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I used black beauty on my frame, watch it though cause there is different grits and my blaster didn't like the bigger stuff.
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Old 07-25-2012, 09:37 AM
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Quote:
Originally Posted by ChiefBigB
If I'm not mistaken bi-carbonate is a milder media used for paint and is not that great for tough rust usual found on the frame. I would stick to sand, and use a respirator.

You're correct in that soda is used to strip paint.
The reason for soda on body sheet metal is because it doesn't generate heat and warpage in the panel.

For a frame, especially with heavy rust and scale, silicon carbide would work best. It cuts more aggressively (faster) and the frame is heavy enough there's no need to worry about warpage.

Put a large sheet of plastic down to catch/reuse your media and don't forget your safety equipment.
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Old 07-25-2012, 09:52 AM
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I use sand blast sand from Tractor supply.
Pressure blaster is the way to go but you need a good air supply.
15 CFM or more.

This is my set up. it keep the sand in check and eazy clean up and reuse the sand.




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Old 07-25-2012, 10:05 AM
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My wife is going to love my new sand blast booth! I like it and thanks for the input. I have to take a break from my frame, but should be back on it late August, I'll post up what I do. Thanks everyone.
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  #16  
Old 07-25-2012, 12:02 PM
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Use dry ice. Wont damage the frame and there is NO CLEAN UP.
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Old 07-25-2012, 01:49 PM
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I use Dupont Starblast media.
http://www2.dupont.com/Titanium_Tech..._H_60159_2.pdf
This product is 95% silica free. I think a 50 lb bag is between 9 to 11 dollars. This media works good with my HF blast pot.

I usually buy a couple bags at a time from this supplier: http://www.canfieldjoseph.com/abrasive-blast-media.php
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Old 07-25-2012, 02:00 PM
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FYI: http://www.ifsja.org/forums/vb/showthread.php?t=126477
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