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What a result on the electronics side Andrew! 40 bar, wow thats quite a lot, is that air or hydraulic, I assume hydraulic, does the machine have a pump on it?
Phil.
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You are welcome Will - you have a Saddleback and two Berkshire there  :thumbup:

This morning I gave the outside of the coolant tank a second coat (no pictures - one coat looks much like another!) When this has hardened a bit, probably tomorrow, I'll invert it and give the inside another coat.

Then the Postman (Steve) brought me two 40 BAR flange mounted hydraulic gauges to replace the rather unreadable ones on the machine. I'll need to be able to read them as I commission things.

#1 Gauge monitors pressures associated with the automatic chuck, and #2 does the same for the tail stock.

All these gauges are glycerine filled for safety, and the originals both had cracked plastic lenses that were bulging ominously and the glycerine had leaked out, so best replaced.
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How do I?? / Re: How does CNC _actually_ work?
« Last post by PekkaNF on Today at 05:45:18 AM »
I really don't like all the features Maslow cnc:
* Accuracy/relolution varies wildly depending on where the router is located, "top" of the plate resolution is low on vertical direction. 
* To avoid excessive waste you have to get pretty creative.
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A great day Andrew. Thanks for the pig(x)s!
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New from Old / Re: The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
« Last post by pycoed on June 21, 2018, 03:59:30 PM »
Isn't it amazing what Old Speckled Hen can achieve? :drool:
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New from Old / Re: The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
« Last post by awemawson on June 21, 2018, 03:32:53 PM »
Yes Pete I'm sitting gathering my thoughts in a mixture of exhaustion from today's activities, quiet satisfaction in getting some sense from the controller, and relief that the lathe hopefully now won't be a very large, expensive, and slightly embarrassing door stop  :clap:

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New from Old / Re: The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
« Last post by Pete. on June 21, 2018, 02:35:31 PM »
Excellent!

This would be the point at which I would consider myself properly 'on the road'.
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New from Old / Re: The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
« Last post by awemawson on June 21, 2018, 02:15:37 PM »
Well the day seems to be ending on a high  :clap:

While I was blasting, fire fighting and painting DPD crept in and delivered a parcel from Germany containing the Battery Backed RAM Daughter Card, and the Interface Card - best part of a week AHEAD of schedule  :thumbup:

So after a very careful inspection and copying session for option jumpers in they went :

 :ddb: :ddb: :ddb: AND THE CONTROLLER SPRANG INTO LIFE  :ddb: :ddb: :ddb:

. . . phew, it looks like the gamble may have paid off and this lathe might once more return to active service !

Lots more to do to restore the various bits of data so it knows which lathe it's running in, and you can be sure that there will be a few 'Gotchas' along the way  but most definitely PROGRESS with a capital P
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New from Old / Re: The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
« Last post by awemawson on June 21, 2018, 12:45:39 PM »
Well oh boy what a day !

Last night the 'tank heater' actually got the citric acid up to 43 degrees Centigrade before I turned it off. This morning the objective was to drain the tank, sand blast it and paint it in Rust-Oleum assuming the paint got delivered.

It started off well - I set the tank draining first thing before I fed the livestock, and it was just dribbling when I'd finished breakfast. So I removed the Level Gauge and Tap, and set it up for Grit blasting. The  citric acid had done its work and the horrid flaky rust was all gone with an almost shiny surface left. There was however a lot of what ever that it had been painted with - a very resilient black hard paint.

Grit blasting was going pretty well, except that the black 'paint' (it must be something tougher than paint) wasn't shifting very easily with the grit blaster. I tried hot strong caustic soda solution, and some paint stripper of the sort that stings your hand through rubber gloves, neither had much effect. I reckoned that the Rust-Oleum would be happy on top of it as it was obviously stuck well  :clap:

At this point I decided to check the diesel level in the compressor, and just as well I did. There was a fire raging at the far end of it's cabinet. Not a little baby thing, but a raging inferno blown by the radiator fan of the compressor.  :bugeye: :bugeye:

I shut the engine off and high tailed it into the workshop to grab the CO2 extinguisher that I'd placed next to the laser engraver when I got it.

A couple of blasts put most of it out, just a bit still burning on the hot silencer - another squirt and it was out - but WHAT had been burning? Some fluid - I tentatively started the engine again, and something was being blasted through the air and oil coolers by the fan onto the hot exhaust - but what  :scratch: All too bally hot to investigate so I went and had lunch while it cooled a bit.

Returning half an hour later, again I started her up, but this time holding a powerful torch which revealed diesel leaking from a hose and being fanned all over the place. All it was in the end was a loose hose clip which when tightened was fine - but it could have been a disaster. Togged up in the blasting gear I would neither have heard nor smelled the fire, so I was very lucky something told me to check the level in the tank  :med:

So back to the task in hand - I blasted the tank all over, a very tedious long winded job, then blew out all the sand with the compressor and set it up for painting.

A slight delay as by then it was feed time for the pigs (obligatory pictures to satisfy Will-D !) Then I painted the tank with a long armed 'radiator roller' inside and outside. I'll leave it over night and give it a second coat in the morning assuming this coat is dry.

Then pack up the sand blaster followed by a badly need shower and an even more badly needed glass of Old Speckled Hen  :lol:


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Our Shop / Re: Pratt and Burnerd LC lever type collet chuck
« Last post by Biggles on June 21, 2018, 10:23:01 AM »
Hi John, it seems to work after a fashion but the locking mechanism obviously will not. Since there are two keyways in the lever mechanism I can only assume that item 16 is stationary and 18 sits in the other keyway. When the lever is pulled round item 18 overrides 16 which make for a long pushing plunger in addition when the lever is pulled forward this plunger forces the collet out. Anyway that is my assumption.
George
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