I completed the Mach Tach installation today, mounted it under the DRO. I've decided to run it off a 9v battery, I put a switch on the side of the enclosure so it only needs to be on when setting speeds, I figure the battery life should be pretty reasonable that way. All the spare 9V power supplies I could muster were putting out closer to 12v when measured, which apparently risks releasing the smoke from the Mach Tach, not something I want to do, especially considering they are no longer available.
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The rev count agrees with my analogue RPM meter. The spindle speeds are actually double what the plate on the machine states; I guess the high RPM motor has been a retrofit. Top speed is 4600 RPM. Something of an improvement over the original Victoria vertical attachment.
(06-03-2019, 04:15 AM)Pete O Wrote: [ -> ]..... especially considering they are no longer available.
Whaaaa??? This is the first I've heard of this. Bummer.
I guess I better go download all the info files and source code before they disappear too.
Your's is looking good though Pete. Clean install.
I've been adding a few final touches to the Frankenmill as time permits. First a work lamp; I didn't want to spend the money on an off-the-shelf machine lamp, was browsing some online auctions and spotted a bunch of underwater photography equipment, it was in a sale that was unlikely to attract specific interest from the diving crowd so I picked it up for a song. What attracted me was the universal mounting arms and brackets. A modification to an old desk lamp to adapt a 12v domestic downlight (for some reason I have boxes of the things) and the result is a very versatile work lamp.
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With a total of eight ball joints, it can flex into pretty much any position. A nice bonus is that I've put the remaining camera gear back on the net and look like making a small profit
The next little addition was a two-outlet coolant manifold that clamps onto the dovetails under the overarm. Cobbled together out of stuff I had lying around. I run coolant across from the lathe, plain old garden hose fittings seem to do ok for the task. A similar hose connector on the lathe means I can just click the hose onto either one.
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The third completed item is the cover for the horizontal spindle shown in the photos above. The rusty old heavy-walled pipe I picked up to make my big crucible was just the right size to be bored out to fit.
Lastly, some perspex that I shamelessly dumpster-dived for last year finally found it's way onto the mill table. Keeps chips fairly well under control.
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About the only thing remaining before I call the Frankenmill complete, is the top cowl for the vertical motor. Nothing has come to hand just yet.
...and paint the rest of the mill to match.
Tom
(06-27-2019, 11:56 PM)TomG Wrote: [ -> ]...and paint the rest of the mill to match.
Tom
That's retirement talking!