Occasional usage Sand blaster

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Occasional usage Sand blaster

Home Forums Workshop Tools and Tooling Occasional usage Sand blaster

Viewing 25 posts - 1 through 25 (of 31 total)
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  • #19208
    Graham Meek
    Participant
      @grahammeek88282
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      #391144
      Graham Meek
      Participant
        @grahammeek88282

        A little something I knocked up to make sand blasting the odd brass fabrication easier. Given the high air supply demands of commercial cabinets, I decided to make something a little less bulky and that would work off my shop compressor.

        Regards

        Gray,

        view from the rear showing rubber glove attachment and filtered air exit.jpg

        inside the top of the bin, note battery operated led light with protection screen.jpg

        all the workings, sump pan directs media to suction pipe. filter protection baffle at the rear also reflects light from the led.jpg

        #391148
        JasonB
        Moderator
          @jasonb

          Graham, have you got a few more details of teh actual "gun" part that looks like it is powered by a standard blower nozzle?

          #391149
          Ady1
          Participant
            @ady1

            Looks seriously handy

            Tell us more Graham, thx

            #391150
            Dave Halford
            Participant
              @davehalford22513

              You covering the screen with plastic, like you get from cracker boxes?

              #391154
              John Rudd
              Participant
                @johnrudd16576

                Nicely done..! Great for small parts..

                Let us know how well it works..please?

                What abrasive are you using? I use garnet or aluminium oxide, of course depends on what is being cleaned..

                #391163
                Vic
                Participant
                  @vic

                  Nice job. When I made my first sand blaster all the recommendations I could see said you need a massive compressor to run a blasting cabinet. I took a chance anyway and bought a small 2.5 hp 25 litre compressor and found it worked fine for doing small stuff at home. I got rid of my Heath Robinson "cabinet" when I moved house but luckily someone gave me one of the small Clarke blasting cabinets and that works fine. It does say in the instructions that you need a compressor at least double the size that I've got but for what I do the one I've got is ok. Machine Mart sell Aluminium Oxide abrasive in medium and coarse. I normally use the medium stuff in my cabinet.

                  #391165
                  Vic
                  Participant
                    @vic

                    The Tangential Tool in my album has been sand blasted.

                    #391168
                    Grindstone Cowboy
                    Participant
                      @grindstonecowboy

                      What a great idea! Would love to know more, particularly about the 'gun' part.

                      #391174
                      Graham Meek
                      Participant
                        @grahammeek88282

                        Here are a couple of examples of the work done with the unit.

                        The nozzle is the heart of the matter and if Neil would like a write-up on how I went about making this unit I will oblige.

                        fiat 702 view from the magneto side..jpg

                        fig crankases, embryo cylinder heads, con-rods and rotary valve endplates.jpg

                        Regards

                        Gray,

                        #391196
                        Matt Harrington
                        Participant
                          @mattharrington87221

                          What a clever idea!

                          Matt

                          #391201
                          Vic
                          Participant
                            @vic

                            There is a drawing of the commercial gun here:

                            **LINK**

                            Both the Air nozzle (brass) and Abrasive nozzle (ceramic) are replaceable as they wear away with use.

                            This is the grit I use, they also do several others.

                            **LINK**

                            #391250
                            Howard Lewis
                            Participant
                              @howardlewis46836

                              Very neat!

                              Is the viewing panel sheet acrylic?

                              Food for a lot of thought there. (And "Where do I store it"? )

                              A write up would be good.

                              Howard

                              #391255
                              duncan webster 1
                              Participant
                                @duncanwebster1

                                Definitely write up required, I want one!

                                My compressor is not 3hp, Not sure what it is, it came from the tip. Can it work in short bursts from a smaller one with a reservoir

                                #391266
                                Vic
                                Participant
                                  @vic

                                  It may be worth pointing out that if you have the space (or need for bigger capacity) that there are bench top blasting cabinets on the auction site for under £70.

                                  #391271
                                  I.M. OUTAHERE
                                  Participant
                                    @i-m-outahere

                                    yes X 1000 for that idea ! I never thought a rubbish bin could be used for a blasting cabinet !

                                    If memory serves me correctly ( usually doesn't ) you can turn the other glove ( R/H one in the set ) inside out and it becomes a left hand glove .

                                    #391315
                                    Graham Meek
                                    Participant
                                      @grahammeek88282

                                      This is the size of compressor that I use. Okay if you use it sensibly.

                                      Regards

                                      Gray,

                                      my compressor.jpg

                                      #391321
                                      Les Jones 1
                                      Participant
                                        @lesjones1

                                        Hi Graham,
                                        It's nice to see you back on this forum. Hope you are well and enjoying retirement.

                                        Les.

                                        #391340
                                        John P
                                        Participant
                                          @johnp77052

                                          I built one of these sandblast cabinets 20 + years ago from
                                          a kit of hardware parts and the drawings for the cabinet
                                          made from plywood,it will run all day on the same size
                                          of compressor.

                                          It looks as if the vent on the back of the bin blaster has a
                                          filter in it these are worse than useless as they block up very
                                          quickly so the dust finds the next easy route out.I doubt
                                          that it would be wise to use this inside the workshop you
                                          would find out why the next time you use your lathe.

                                          My own cabinet is sealed and vented externally.

                                          Rubber gloves 24 inch in length are avalable from J&L
                                          Pt no GLV-90082E.

                                          John

                                          005.jpg

                                          #391373
                                          Graham Meek
                                          Participant
                                            @grahammeek88282
                                            Posted by Les Jones 1 on 16/01/2019 11:00:12:

                                            Hi Graham,
                                            It's nice to see you back on this forum. Hope you are well and enjoying retirement.

                                            Les.

                                            Hi Les,

                                            Thanks for the welcome back, sometimes I wonder if I did the right thing, but we shall see.

                                            Regards

                                            Gray,

                                            I keep my unit in an annex, it does not take up any real-estate in the workshop proper, (I cannot afford to waste the space) and is used mainly in this location. As regards costs, this unit cost no more than £20. Some of the items were ex-stores stock, others were salvage items.

                                            My first lash-up for the "blast box", a wooden box with a perspex lid, had no ventilation to the outside as such, but instead had a connection to the shop vacuum. In this design the need for the vacuum was felt unnecessary, but builders can fit one if they wish, using many of the domestic waste fittings. Two years on of occasional usage the filter is still clean. No doubt my internal baffle allows the heavier particles to fall before the air exits the filter.

                                            Regards

                                            Gray,

                                            #391385
                                            Vic
                                            Participant
                                              @vic

                                              I use a shop vac hooked up to mine. It means the air in the workshop is cleaner and you can see what's going on in the cabinet better.

                                              #391394
                                              John Rudd
                                              Participant
                                                @johnrudd16576

                                                Better with a cyclone seperator…..the grit can be recycled..

                                                #391403
                                                Involute Curve
                                                Participant
                                                  @involutecurve

                                                  Looks useful for occasional stuff as stated.

                                                  I have been toying with a small Vapour blaster idea for a while and have most of the drawings done, in essence they are quite simple machines and by default recycle the media, also they don't require as much air as normal blasters, we have four at work that are 1.5m x 1.2m internally, two are used for general cleaning of various mainly automotive components, but two we exclusively use for our race engine prep before rebuild, depending on media the finish is fantastic, I'm unsure why but after vapour blasting, aluminium seems to hold its finish for ages, even so most of our race engine crank cases now get Xylan coated.

                                                  #391407
                                                  Raymond Anderson
                                                  Participant
                                                    @raymondanderson34407

                                                    Superb work [ as usual ] and welcome back to the forum, it will certainly be all the better with you back.yes

                                                    #391421
                                                    Vic
                                                    Participant
                                                      @vic
                                                      Posted by John Rudd on 16/01/2019 16:28:27:

                                                      Better with a cyclone seperator…..the grit can be recycled..

                                                      No need, the grit isn't sucked up in the first place. A pleated paper filter keeps the grit in the cabinet only allowing the very fine dust to be removed. wink

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