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  1. #1
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    Default Why you need an air micro die grinder

    Been at it again.

    Here's the latest video.

    Why you need a cheap air pencil die grinder - micro die grinder - YouTube

    Cheers

    Rob

  2. #2
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    Jan 2011
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    Default

    Go at it Rob. I'll watch your vids to see what is possible with the die grinder then I don't have to try stuff just to find out. I'll let you do it.

    Dean

  3. #3
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    Default

    Quote Originally Posted by Oldneweng View Post
    Go at it Rob. I'll watch your vids to see what is possible with the die grinder then I don't have to try stuff just to find out. I'll let you do it.

    Dean
    In the situation shown in the video, it would be difficult to open out the hole any other way. Maybe a very tiny carbide boring bar ?

    I recon these little die grinders are the bees knees and being absolutely dirt cheap there's no reason not to have one.

    I couldn't do that sort of job with my full sized tool post grinder.

    Rob

  4. #4
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    Jan 2011
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    Default

    Quote Originally Posted by nearnexus View Post
    In the situation shown in the video, it would be difficult to open out the hole any other way. Maybe a very tiny carbide boring bar ?

    I recon these little die grinders are the bees knees and being absolutely dirt cheap there's no reason not to have one.

    I couldn't do that sort of job with my full sized tool post grinder.

    Rob
    I bought one off EBay after reading about them in the thread about improving on the dremel. It is the nearest thing to a TPG I have at the moment, although I am yet to make a holder.

    Dean

  5. #5
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    Default Some extra pictures

    You can't compare these to a proper TPG, but as shown in the video they can do small stuff that would be difficult any other way.

    LIke a Dremel, to be useful you have to buy the accessories - carbide and diamond burrs especially.

    Here's a few photo's I took that I was going to add to the video but left off.

    You may find them interesting.

    tp1.jpgtp2.jpgtp3.jpgtp4.jpg

    Cheers

    Rob

  6. #6
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    Default

    Thanks Rob. Did both knurling wheels require adjustment?

    Dean

  7. #7
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    Default

    Hi Dean,

    Yes, both were just a tad undersize. Enough to be a major problem.

    I did actually try a drill before I used the air grinder, and no way that metal could be drilled.

    Being Chinese I thought they may be cheesy, but not so. I got the scissor knurl from the UK and it seems to work OK. Probably made in China as well

    Anyway, seeing as we were discussing these little grinders recently I thought it was a good opportunity to show what they can do.

    People probably look at them and think what would I use that for ? but once you get one it's surprising how handy they are.

    Cheers

    Rob

  8. #8
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    Nov 2008
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    Default

    Rob, Dean,

    I have some metal to remove on a little cast iron project that I have been dragging out because my Dremel can't access the areas I need to work on leaving me with dainty jeweller's riffler files as my only means.

    There is an abundance of similar looking pencil grinders on Ebay with hugely varying prices. Richard"RC" splurged and dropped 50 bucks or so on a CTC grinder. Some of the others, the pink anodised versions, sell for around 30 dollars.

    What exactly do you have?

    Bob.

  9. #9
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    Default

    Quote Originally Posted by Anorak Bob View Post
    Rob, Dean,

    I have some metal to remove on a little cast iron project that I have been dragging out because my Dremel can't access the areas I need to work on leaving me with dainty jeweller's riffler files as my only means.

    There is an abundance of similar looking pencil grinders on Ebay with hugely varying prices. Richard"RC" splurged and dropped 50 bucks or so on a CTC grinder. Some of the others, the pink anodised versions, sell for around 30 dollars.

    What exactly do you have?

    Bob.
    You hit the nail right on the head - the pink anodised ones are all the same as far as I can tell. Some people just try and charge more.

    I got mine from a CTC Ebay outlet (they have a few) for about $30 delivered.

    Prices have gone up a bit since then as our $ is not as good.

    MICRO AIR GRINDER #C99

    They also do a 4 bearing model which is more for continuous use.

    MICRO AIR GRINDER - STRAIGHT HEAD #G69

    Plenty on Ebay exactly the same even cheaper eg:

    NEW AIR Micro DIE Grinder Tool 17 PCS Mounted Stone Grinding Polishing Engraving | eBay

    I'd have no hestitation buying any of them.

    I did a web page on them a while back which gives a lot of information, and how you can get the best performance out of them (an easy collet modification).

    Air micro die grinder

    Cheers

    Rob

  10. #10
    Join Date
    May 2006
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    Lake Macquarie NSW Australia
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    73

    Default

    Try Bunnings - Just bought - Trade Air - Micro Grinder Kit (17 Pce) - $24.00
    Clearance prices - get in quick!
    regards Ned

  11. #11
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    Mar 2011
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    Default Bunnings

    Quote Originally Posted by Black Ned View Post
    Try Bunnings - Just bought - Trade Air - Micro Grinder Kit (17 Pce) - $24.00
    Clearance prices - get in quick!
    regards Ned
    Ned
    I went directly to Bunnings after reading your note.
    They did not know or heard of the Micro Grinder Kit.
    Perhaps this is a localised thing?
    regards
    Bruce

  12. #12
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    Default

    Not listed in the catalogue on line for Bunnings stores in SA.

    Rob

  13. #13
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    Default

    I bought this one NEW AIR Micro DIE Grinder Tool 17 PCS Mounted Stone Grinding Polishing Engraving | eBay.

    Same as Rob I think. Was $3.00 cheaper than in this link.

    Dean

  14. #14
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    Jul 2006
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    Athelstone, SA 5076
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    Default

    Quote Originally Posted by nearnexus View Post

    They also do a 4 bearing model which is more for continuous use.
    after watching your utube vid on endmill sharpening 3 off those little 4 bearing thingies arrived in the post on Tuesday.
    1 for me and the others for a couple of mates...

    now to get around to making a clamp

    thanks Rob

  15. #15
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    Default

    Be interested to hear what you think of it.

    Get the burrs etc and you are set to go.

    Cheers

    Rob

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