The Craftmans Shop > New from Old
The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
awemawson:
So with no more ado I marked up the new items with the arbitrary numbers I had put on the old as I removed them, checked the jumper settings on the card and started re-assembling the I/O sub assembly.
It looks slightly better than it did :ddb:
awemawson:
Then when I escaped from some neighbours who had dropped in for tea (excuse - I need to feed the pigs !) I was able to start putting that mad octopus tangle of cables back hopefully where they came from and re-fit the I/O sub-assembly from whence it came.
Apart from bally inaccessible screws it went well. I could then start re-wiring the Control Panel ready for re-fitting
awemawson:
Now the corrosive fluid managed to put a drip or two on the 9 pin 'D-Type' plug and socket for the MPG Encoder - I've opened up the cable mounted socket and there was not much there to clean out - mainly just external - I've not opened the Euchner Encoder - I'll leave well alone unless it proves not to work when finally I get everything back together.
I've put the Control Panel back in place, but only with three screws - pushing my luck I suspect to 'assume' all is well in there
. . .that brings me to the end of the first week of working on the Beaver Lathe, and I think quite a lot has been achieved. But a long way to go yet I suspect before it's back up and running.
Pete.:
Just goes to show you that something that looks on the outside to be a very nicely kept machine can hide a whole host of problems.
Is all that damage from one little failed battery Andrew or is there another source for the corrosion?
awemawson:
Just one 8 ampere hour 3.6 volt Lithium Thionyl Chloride primary battery Pete, but left for best part of ten years to ooze and rot. :bugeye:
So as I'm going to have to wait a week or so for the Interface card and it's RAM Daughter Board to show up I thought that I might as well set the Coolant Tank up de-rusting with citric acid.
First I gave it a good thumping and scraping to shift as much loose rust as possible. Tipping out the loose made quite a pile. Then I blew it out with an airline, and set it up on 'builders trestles' strategically close to a drain and very carefully levelled it.
Then came bucket after bucket of hot citric acid, filling it until there was a meniscus visible so that hopefully the underside of the top surface will be wetted as well.
At least this has shown that there are no pin holes (YET!)
Covers over it over night to stop any wild life drinking it and dying :bugeye:
No doubt it's going to take quite some time to have it's beneficial effect, meanwhile I can try and decide on a paint treatment that is affordable (large tank this!) and effective.
POR15 would be nice as would Glyptal but either would bankrupt me. The other suggestion has been marine quality two pack epoxy paint
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