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  1. digiex-chris

    Torque needed for MT3 drawbar?

    I wonder how difficult a retrofit to taper bearings would be
  2. digiex-chris

    Adding Vernier Caliper to indicate lathe saddle travel

    agreed. It's the man, not the machine. Just take a look at the watchmaking trade to see what's possible with hand held tooling. Incredible precision.
  3. digiex-chris

    Digital edge finder Help

    trouble is, we don't know if there's a resistor or regulator in there already or not
  4. digiex-chris

    Digital edge finder Help

    They get brighter to the point that they burn out. An LED rated for 1.5v will probably work ok at 2v but have a limited lifespan, and will pop instantly at 9v. LED circuits rated for 3v or higher tend to be using driving electronics to maintain a steady output as the battery dies, or are...
  5. digiex-chris

    Digital edge finder Help

    ah, interesting. Well that range makes it an easy test. 1.5v won't light if it requires 12.
  6. digiex-chris

    Digital edge finder Help

    I don't know exactly, but just a thought. Considering that typical LEDs of that type require 1.2 to 1.6v, and that there's no funny electronics in side (it's just making a connection between an LED and a battery, simple as that) I don't think it's very likely that it'll be 3v. It's difficult to...
  7. digiex-chris

    Adding Vernier Caliper to indicate lathe saddle travel

    Cheap calipers tend to be lacking in the temperature compensation and low battery protection as well. As long as you're familiar with those effects it's fine though. Even taking cosine error into account, it's still significantly more accurate than trying to split the 0.01" (the smallest...
  8. digiex-chris

    Adding Vernier Caliper to indicate lathe saddle travel

    Pretty simple. It's just a plate with a pivot that holds any gear in mesh with the gear train as an idler. I even put a key, so that all of the wear is on the pivot, instead of the gear. It just swings to adjust for different gear ratios. Just use any gear there to reverse it. The top and...
  9. digiex-chris

    Adding Vernier Caliper to indicate lathe saddle travel

    Indeed, I rarely use the autofeed myself unless I'm doing something really long. I'm pretty happy about the machine, except for the odd graduations on the tailstock ram. I can never get my head around how much advance is happening per 5 or 10 ticks. I've been thinking about how to add a caliper...
  10. digiex-chris

    First engine, an RC aircraft 4 stroke

    A few things have been delaying this project. 1) I needed to make some tools to radius the under side of the head 2) It's summer and I own a motorcycle But I've made a little progress on a radius tool. I wanted to make it fit many types of jobs, so I needed a lot of adjustability and the...
  11. digiex-chris

    Adding Vernier Caliper to indicate lathe saddle travel

    Brian, Craftex B2227L? If so, you can turn off the lead screw with the handle to the left of the apron, engage the leadscrew with the apron leadscrew engagement, and move the carriage with the crank at the right hand side of the tail end for much finer feed and dial graduations. I imagine you...
  12. digiex-chris

    Quarter Scale Merlin V-12

    I was able to make an 1/8" HSS parting blade into a bifurcated tool for this purpose and make it perform cutting sideways by making a toolholder for it instead of using a standard parting blade holder. Rather than clamping down like most parting blade tool holders do, I cut a slot in the side of...
  13. digiex-chris

    Vega V twin Aero engine

    Very nice!
  14. digiex-chris

    Learning to use an Android Tablet

    The nexus tablets seem to be good because they're right at the front line of android development. I just stuck android 5.0 on mine the other day.
  15. digiex-chris

    Glass bead finishing ......

    Thanks! I must be in the ballpark then, that's pretty much what I'm using. I'll turn the pressure back down to 70.
  16. digiex-chris

    Glass bead finishing ......

    what orifice size are you using for those 80 grit beads?
  17. digiex-chris

    Learning to use an Android Tablet

    HMEM has an app that makes it somewhat easier to manage. Tapatalk for most other forums.
  18. digiex-chris

    Carb float needle seat

    A friend stopped in on Sunday with a dirt bike carb that had a float needle seat in rough shape. Kawasaki says non-replaceable. A lathe says otherwise. Here's the carb with the seat pulled (using a tap) And the seat, with the needle, threads cut by the tap used to pull it Some nice brass...
  19. digiex-chris

    Howell v-2 four stroke gas engine.

    That foam looks a lot like what's in my Briggs and Stratton filters.
  20. digiex-chris

    Howell v-2 four stroke gas engine.

    Speaking of stress free turning. I usually feel that way about a job. The complex milling job is the stress maker, and the lathe is the stress reliever. Do t know what it is about it.
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