Announcement

Collapse
No announcement yet.

Blast Media Recommendations

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Blast Media Recommendations

    For years I've been using 70 grit aluminum oxide to blast the parts I powder coat. This includes painted, bare, rusted or oxidized steel or aluminum. It works well and I've never had any issues with it. I'm just wondering if there's a better media or grit size that's a better choice. Tractor Supply sells 50lbs of black beauty for $7.99, but I understand that it breaks down faster than aluminum oxide. Is this a good alternative? Suggestions and advice are appreciated and thanks.

  • #2
    Black Beauty is almost a One-Use blast media in a Pressure blaster. Maybe a couple of rounds in the Siphon cabinets. 70 grit sounds like a bit of a stretch for most anything as far as profile. Seems too aggressive and can cause issues getting a smooth coat. Most use 100 grit... some use 80 grit and reuse it until it's a little used up but around 100 is best for most applications. The black beauty breaks down to be something like 120-140 grit after 2 rounds and will remove paint and some surface rust, but it really doesn't give much of a profile once it's been through the blaster once or twice (depending on type of blasting equipment). If I'm going with single cycle blast media, I sometimes use Crushed glass as well, outside in my pressure blasting rig. It's cheap and effective. I only use it on steel though. As far as I'm concerned there's not really a single "best" media. Some things require special attention or more aggressive means... it's your call.
    EMAIL scottrodspc@gmail.com

    Comment


    • #3
      I'd rather pay more for the AlOx rather than have to keep changing out the media. My finishes have always come out nice, but if 100 grit will give me a better profile, I'm all for switching over. Where's the best place to get this for a reasonable price in 50lb qtys? Shipping can be a bummer on this stuff.

      Thanks!

      Comment


      • #4
        I found a local Abrasives supply house. Sandpapers of Texas is my supplier. I drive to their warehouse and pick it up myself. There's likely a wholesaler near you if you're in a major city. If not, it might be worth looking into as an addition to any foray into the closest city...
        EMAIL scottrodspc@gmail.com

        Comment


        • #5
          I know the general manager of a large local PC shop. She'll be able to tell me where they get their blast media since they buy it by the pallet. Maybe they'll even sell me a bag.

          Comment

          Working...
          X