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    #16
    Si basically whats happening is the black stuff is so course and heavy it wont suck up the tube...right??? How is glass bead sizes graded??? Bigger the number the bigger the size of the beads???
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

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      #17
      I think glass beads are rated/scaled like shotgun shot pretty much....so the more "O"s, the smaller they are....could be wrong though....the one thing about glass beads, is that they are slippery....so tend to flow better.....and since you have a cabinet, you can reuse, right ?....might be worth a try....but they aint cheap....I wanted to blast a 1962 Harley tank, went to get the beads, and it was like $30 for like a gallon container....I pay $7 for a 40 lb bag of the Black Diamond....

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        #18
        Just found this....this guy did the same as i did and bored out the orifices.....mebbe you can do similar to your setup ?....

        Made this video to show how good the cheap handheld blaster from HF works. I should add that in the video i had tank removed from the gun so i could show how...

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          #19
          Mines a 40 LB rated cabinet with the sump that the media fall back down into and is resucked up the feed tube. Not any orifices to be drilled out that i know of like theses gravity fed units.
          MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
          1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

          NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


          I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

          Comment


            #20
            This one. Gave the guy 40 bucks form it and its like new.


            MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
            1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

            NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


            I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

            Comment


              #21
              Originally posted by chuck hahn View Post
              I dont know what it is but equal amounts in the hands and the black stuff is noticably heavier than the walnut shell.
              That is definitely coal slag. HF sells it as Black Diamond. It cuts really well (if you can get it to blow through your gun). It's pretty cheap at $10 for a 50lb bag. I use it all the time. I don't have a cabinet though. I just suck it up out of a 5 gallon bucket and let it fall to the ground. Doesn't kill the grass like soda does.
              https://drive.google.com/open?id=0B9zH8w8Civs8ejBJWjdvYi1LNTg&resourcekey=0-hlJp0Yc4K_VN9g7Jyy4KQg&authuser=fussbucket_1%40msn.com&usp=drive_fs
              1983 GS750ED-Horsetraded for the Ironhead
              1981 HD XLH

              Drew's 850 L Restoration

              Drew's 83 750E Project

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                #22
                I have the HF cabinet too and use the cheap stuff from the farm store, it's called black something or other, might be diamond, I'll have to look. 5 HP compressor and 20 gallon tank. If you take out the screen in there (assuming your not needing it to support what your blasting) and put a long kitchen slotted spoon in the cabinet you can give a stir periodically. Sometimes the media doesn't want to fall all the way back down to the intake hose and a quick stir without having to open up the cabinet door saves time. I always have good results

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                  #23
                  So I am leaning at running over to HF and grabbing 25 LB sack of this...opinions??? Not so sure of the "ground glass" media.

                  MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                  1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                  NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                  I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                  Comment


                    #24
                    The glass flows better, but costs a lot more....all depends on yer budget.....Ive used playsand (silica) and its VERY dangerous to your lungs (I have emphysema btw), well, IMO, if yer gonna use glass beads, even in a cabinet, make sure you have proper respiratory protection. That goes for ALL media btw....even though I dont use it using the Black Diamond....if yer a younger guy, please wear a proper respirator....dont matter with me anymore, I'm gonna be dead in 5-10 yrs anyway....

                    Comment


                      #25
                      Theres a fitting for hooking a shop vac to which suctions all the dust up and the vac filters the air obviously so thats a good feature. I always wear a dust mask at a minimum if grinding and stuff thats thrown debris around.
                      MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                      1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                      NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                      I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                      Comment


                        #26
                        Originally posted by chuck hahn View Post
                        So I am leaning at running over to HF and grabbing 25 LB sack of this...opinions??? Not so sure of the "ground glass" media.

                        http://www.harborfreight.com/25-lbs-...dia-61875.html


                        Get the black stuff and call it good. The glass stuff from HF, at least in my experience, breaks down to quick

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                          #27
                          If you are going to be painting the stuff after then glass bead is not that good as it leaves a smooth surface, nothing for the paint to bite into to, especially on aluminum.

                          Bead is fine for paint, corrosion removal on aluminum but then you need to follow with an abrasive which will ensure adhesion. I always follow with 80-120 grit aluminum oxide at about 60-80 psi, leaves a great surface for paint adhesion.

                          Glass grit is also a good cleaner, more aggressive than beads but will not leave as smooth a surface and is usually way cheaper. The coal slag, I used it once, is pretty aggressive for aluminum IMOP.

                          I have a 90 gallon compressor with a pretty good CFM delivery rate, I think your small compressor is gonna be worked pretty hard to feed the cabinet for an extended blasting time, small quick parts no problem, but cylinders or cases are gonna be hard on it. You will be working it so hard it will get very hot and you will end up with lots of moisture unless you have a really good separator/dryer.
                          1978 Gs1085 compliments of Popy Yosh, Bandit 1200 wheels and front end, VM33 Smoothbores, Yosh exhaust, braced frame, ported polished head :cool:
                          1983 Gs1100ESD, rebuild finished! Body paintwork happening winter 2017:D

                          I would rather trust my bike to a technician that reads the service manual than some backyardigan that THINKS HE KNOWS how to fix things.

                          Comment


                            #28
                            Originally posted by chuck hahn View Post
                            This one. Gave the guy 40 bucks form it and its like new.
                            Maybe the lousy performance is why he sold it so cheaply.

                            Comment


                              #29
                              Originally posted by JJ View Post
                              Maybe the lousy performance is why he sold it so cheaply.
                              I doubt it. Lots of guys using those blast cabinets with good results. Chuck got a major deal for $40. Now he just needs to get some normal sized media and get busy. Coarse grade coal slag is not normally used in a blast cabinet anyway.
                              Ed

                              To measure is to know.

                              Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

                              Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

                              Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

                              KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

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                                #30
                                40 bucks for a 180 normal store priced unit was a no brainer for sure. Im thinking it didnt work for him like this black stuff isnt working for me so he sold it. I will get the fine glass beads maybe next week and see what they do. Sucks the w2alnut shells up like noones business but they basically just bounce off and are doing nothing. Just not hard enough im guessing.
                                MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                                1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                                NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                                I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

                                Comment

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