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KeithAug

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About KeithAug

  • Birthday 05/27/1953

Profile Information

  • Gender
    Male
  • Location
    Sussex, England.
  • Interests
    Sailing, Naval History, Model Ship Building, Model Steam Engine Building. Maisie walking - she is top left.

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  1. KeithAug

    What have you received today?

    Per, Just like a boss. You work hard and the boss finds you more work for you to do. Well done and enjoy the build.
  2. KeithAug

    Home Made Mini Mill

    One step forward and two steps back seems to have been the motto for the last few days. One off builds tend to be that way and fixing / improving the design on the run is a necessary part of the process. I continued work on the carriage clamp and pressed into service my ball turning attachment that I made several years ago. I needed a ball for the end of the clamp handle. The funny thing about ball turning attachments is that they are always high on the must have list but are seldom used. In a little over 4 years this was its 4th outing. I do find the process quite satisfying. The clamp worked well, and with a bit of polishing the ball looked just the job. Unfortunately I subsequently decided I needed to stiffen up the slide assembly and the design for doing this involved a different clamping arrangement - so this work was wasted. I then measured the run to on the spindle and it was a deal greater than I thought necessary - about .003" eccentricity. So followed a day tracking down the problem. On inspecting the collet i realised the bore was rough and did not run true when measured with the dial indicator. I decided to re machine the internal taper. I set the topside to the correct taper angle using one of the collets as a reference for the dial indicator. I then machined the taper angle in the collet bore. I then rechecked and found that the eccentricity had only improved marginally. I continued to check and even checked the bearings were running true - they were!!! Having eliminated all other possible causes I was forced to conclude that the bearing seats on the shaft were at fault - you may recall from earlier I had re machined one. If I had started from scratch I would have turned the shaft between centres, but I took a short cut. The shaft is now in the bin and I have dug out a bar from which to make a new one by the correct method!!!!!! So in summary most of the work over the last few days (like the shaft) is in the bin.
  3. Patrick, they don’t make them like they used to. Can’t wait to see what you imagine to be inside. Perhaps warp engines with dilithium fuel bunkers.
  4. That was quick Brian, and it looks good. What method did you use to simulate the caulking?
  5. John, I was pleased to see the update. The final version of the sail looked great and the use of shell was fascinating. Your self control during the fan incident demonstrates excellent marital skills but you might consider buying her flowers, as a thank you, and to encourage her to do it again.
  6. KeithAug

    Your favorite saying

    One of my Grandfathers sayings, in dialect and with translation. Not very PC but he died before PC was invented. Thar’s nowt maks a woman as mad as to have a saycret at nubdy wants to knaw. There’s nothing that makes a woman so mad as to have a secret that nobody wants to know.
  7. KeithAug

    Machining copper stock.

    Mark - I'll be interested to how you get on with copper.
  8. KeithAug

    Machining copper stock.

    M Mark, lard is animal fat Lard oil is the clear, colourless oil pressed from pure lard after it has been crystallized, or grained, at 7° C (45° F). It is used as a lubricant, in cutting oils, and in soap manufacture. ... Lard oil has excellent lubricating qualities, but it tends to become rancid
  9. KeithAug

    Home Made Mini Mill

    Thank you Mark. Today the temperature outside was 25 deg c (77 deg f). If felt hot but fortunately the workshop only got to a comfortable 16 deg c. I reached a bit of a milestone in the build. I made the carriage lock for the sliding plate and attached it to the plate with 2 bolts (the 2 smaller holes). The locking handle has still to be made and uses the larger centre hole. With the lock attached I was able to bolt the bearing housing to the sliding plate. I was then able to assemble the milling head on to the runners. The leadscrew and nut were then assembled. Finally I have something that starts to look like a mill. The head now moves smoothly and securely in response to the turning of the leadscrew - very satisfying. I took a couple of further shots to show maximum and minimum elevation.
  10. KeithAug

    Machining copper stock.

    Mark - copper can be quite tricky - it work hardens quite quickly and pick up on the tips of tools can give a poor finish. Because it is very soft it can also be prone to snatching at the tool. My advice would be to use HSS tools which are sharpened to good edge. My preference is to use cutting oil as i think it lessens the tendency for pick up and snatching - as a result gives a better finish. But here is what the experts say:-
  11. Dave, the strips of wood with angled cuts look like they are the sides of stairs. The treads go in the slots.
  12. Brian - Kit plywood in my experience is often warped. Best to check often that the hull has no bends or twists. One advantage of scratch building off of a building board is that the board tends to control the shape until the hull is in an advanced stage of completion.
  13. KeithAug

    Home Made Mini Mill

    Lovely day here - bright sunny and 24 deg centigrade, only 2 weeks ago I was walking in snow - thats British weather for you. More progress - the spindle is now done. The spindle as removed from the router had bearings at the extreme ends:- The spindle had been machined so that both bearings were press fits (and as a consequence took some getting off). I used the lathe tailstock as a press to replace the lower (chuck end) bearing The distance between bearings was circa 6 inch. I wanted the bearings on the mill spindle to be circa 3 inch apart so I needed to turn down the shaft. Easier said than done as the shaft turned out to be as tough as old boots. My preferred HSS tools struggled to cut it and I was forced to press my TCT tools into action. Even then it was a slow process requiring plenty of cutting fluid. Anyway some time later:- The outer races of the 2 bearings are clamped axially in the bearing block and the inner race of the lower (chuck end) bearing is rigidly clamped to the spindle. Consequently the newly machined seat for the upper bearing needed to be a sliding fit. The shoulder on the shaft is about .010 short to allow for the expansion of the spindle relative to the bearing housing. The spindle / bearings were then mounted in the housing and the chuck was replaced. The chuck is treaded such that the action of the cutter is to tighten it on to the spindle. The spindle shaft sticking out of the the top of the bearing housing will be used to mount drive pulleys - currently I think 3 pulleys. The spindle feels nicely tight with no unwanted movement. I next needed to make the carriage lock for the vertical slide. This will be bolted to the slide plate and will clamp round the right hand slider bar. Three more holes were drilled in the slider plate and the block for the clamp was cut from 2" x 1" bar. The final operation on the slide plate was to machine and tap holes in the upper left hand edge to take the mounting for the motor (yet to be designed). Fortunately I think that is the end of machining on the sliding plate, it is already looking a bit like a Swiss cheese. I also mounted the boss on the back of the slide plate that attaches to the leads crew nut. The leads screw nut is fastened in place by the grub screw in the end which via a taper pushes out the pin on outside diameter. this clamps the lead screw into the bore - see phot.
  14. KeithAug

    Home Made Mini Mill

    Druxey - thank you - and an interesting point you raise. In the UK periodic table its aluminium:- Is it aluminum in the Canadian table?

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