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  1. A

    Inline 4 cylinder 2 stroke

    I was watching it over there, now I will watch it here. I do like to see CNC machines working like that. I made lots of changes to Jan's design when I made my Puppy too. Jim
  2. A

    Vapor Fuel Question

    Everybody has problems with these carbys but I agree that the first thing to do is to increase the surface area. Then the fun begins. They seem to be very susceptible to filling level. This makes sense in a round tank since the surface area changes. But it also happens with a square section...
  3. A

    Lamina flow engine

    Well done Alex, I build one that worked both with a flywheel and as an oscillating engine. And now it doesn't and I don't know why. They are tricky little engines. Jim
  4. A

    Selling my Inverted Hit n Miss Engine

    Complete with the Pimento Jar carby! That is a real collectors item. Definitely worth more than the current bid. Jim
  5. A

    Hit & Miss Engine-Combustion Chamber

    Hi Neil, Check the effect on compression ration of changing the dimension you asked about. Jim
  6. A

    What do I do with your workshop?

    It's the small stuff that is important - cutters, vices, parallels, dti, taps and dies, drill sets, chucks and so on. The other day, I added $100 worth of M2 capscrews to those already in the box and it hardly made any difference; it made me realise that the uninitiated would not realise the...
  7. A

    Learning to use an Android Tablet

    I installed Chrome and tried the workaround (Chrome::/flags etc) but it seems that my Samsung Tab2 does not have the hardware to support WebGl which is required for Onshare. I would like to buy another Samsung tablets since most of my other equipment is Samsung. Can anybody suggest a Samsung...
  8. A

    cube inside a cube

    Well done Baz. And of course you would chamfer the inner cubes just so the rest of us have something to think about. Jim
  9. A

    cube inside a cube

    Thanks Baz, after a bit of maths and some "adjusting" on Geomagic I have come up with this for a 24mm cube. I have adjusted the holes to suit my milling cutters and will try to make it on the mill. I intend to leave it intact like xpylonracer's example. It remains to be seen if I have the...
  10. A

    What do I do with your workshop?

    A few years ago, my wife looked at my workshop and asked what she should do with it if she was left on her own. None of the family are interested but I am lucky enough to have a friend about the same age as my daughters. He is a fellow engineer and is the chap hired to replace me when I...
  11. A

    cube inside a cube

    Your cube looks really great - just the thing for a desk toy. I particularly like the spidery form. Do you have the dimensions? Jim
  12. A

    iDesign - It's not Autocad, but it ain't bad!

    I have been playing with Onshape (https://www.onshape.com/) for much the same reasons as Chuck. Onshape is a free 3d package currently in Beta form but which is rapidly being developed. It is easy to use if you have previously used Geomagic or Alibre and is worth a look. It works well on...
  13. A

    Making 'Soft Jaws' for a bench vice.

    Once I realised that I almost never used the vice without soft jaws, I just replaced the jaws on my vice with aluminium ones. Never looked back. Jim
  14. A

    A couple of new additions in my life and workshop

    He is irresistible John. Jim
  15. A

    Silver Bullet

    Beautiful job. A real credit to you. Jim
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