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      Drawfiler replied to the thread Water Gauges for Boilers..
      Brass is a mixture not a genuine alloy, ie the crystals of zinc and copper are discrete and not combined, when subjected to a suitable...
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      Drawfiler replied to the thread DRO recommendation for Mill.
      I have been through all of this on two mills, I took advice from Machine Dro and they told me to go for magnetic scales as they have...
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      Drawfiler replied to the thread A newbie from Leicestershire.
      Hi Bosworth Another welcome to you, I am not far away, near Lichfield with a well equipped workshop and happy to help if you need to use...
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      Drawfiler replied to the thread NYLON MILLING MACHINE GEARS.
      if you are worried about metal gears being too strong to act as a safety device in case of a smash up, you could incorporate a small...
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      Drawfiler replied to the thread NYLON MILLING MACHINE GEARS.
      These are made in plastic to deaden noise and vibration and work OK a until the day of the inevitable smash up when using a large...
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      Wet liner engines have been around for a long time so this is a problem with your setup, my contact in the UK who prepares competition...
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      Drawfiler replied to the thread Gear Driven Valve Train?.
      I take your point about backlash so it should be OK. The worms would be better milled rather than screwcut, with a 135 to rack...
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      Drawfiler replied to the thread Gear Driven Valve Train?.
      IMHO Helicals or skew gears will work the valves as it’s been done often before in model sizes. I would be worried about the other...
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      Sorry to revive this, but I have had to but a 48dp hob for another job so I can machine 48 and other dp or Mod spur and helical gears.
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      Drawfiler replied to the thread Stuart 10v.
      Swarf, The first engine I attempted was a 10 v, this was while I was at school, the only kit we had in the workshop was a Myford Ml7 and...
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      Drawfiler replied to the thread Helical gear cutting.
      My tip for entering a cutter when making a spur gear may help here, lets assume we are cutting on a horizontal mill with the blank on...
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      Greentwin lets keep it simple, the ratio (in this case 2:1) is determined by the tooth counts irrespective of whether the gears are...
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      Jasonb is right, the od of the meshing is critical hence the centre distances. I have made steel 2:2:1. 90* pairs for small engines so...
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      Drawfiler replied to the thread Cast Iron Stress relief?.
      The cylinder material is con cast bar which is very stable, I make precision gears up to 5” diameter from it without any distortion,
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      Drawfiler replied to the thread Cutting fluids.
      For ‘straight’ oil I use hydraulic oil on my machines, I have free flow as this clears swarf as well as cools and lubricates. It is...
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