The Craftmans Shop > New from Old
The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
russ57:
My tig has also developed a fault. Pilot arc but no welding current.
Since it is a combo machine I also have no mma or plasma cutter...
A Rossi super p200iS, probably sold under many labels. Just a baby compared to the ones just mentioned.
If anyone has a circuit or service manual....
Russ
awemawson:
--- Quote from: Muzzerboy on December 29, 2018, 05:08:44 PM ---Interesting stuff in the pipeline! What make is the TIG welder? My Miller / Interlas 320ABP weighs about 400kg and you could almost climb inside - sounds similarly unwieldy. Takes something like 70A from 240V single phase on full chat.
--- End quote ---
It seems that it is a "BOC TransTig 350" but is not in the best place for photographs, as it is facing the wall !
AdeV:
So... are you keeping this lathe? Or selling it on ready for the next pig-in-a-poke you see on eBay? :lol:
In fairness, this is a brilliant restoration, it makes me want to get on with the Mazak but I've just got too much other (non workshop) stuff going on, and I'm not entirely sure I've got the patience or methodological mindset to get mine working properly.... although I'd really like to try.
awemawson:
Ade
No plans to dispose of it, and loads still to learn using it. But then I had no plans to dispose of the Traub
But I must dig out the Denford Mirac and sell it as I don’t need two CNC lathes I think
awemawson:
Today I was supposed to be fitting a "Tramp Oil" skimmer to the TC20 coolant tank. Tramp oil is the stuff that floats on top of soluble oil, and is derived from the 'total loss lubrication oil' in the main, and a bit of the soluble oil that might have separated. In industry it also comes from oils put on stock to prevent rust in storage.
Why is it a problem? Well when it covers the full surface of the coolant it prevents oxygen entering, and this promotes the growth of anaerobic bacteria which is a 'bad thing' generating bad smells and potentially bad corrosion products.
You can reduce the problem by adding tablets that chemically kill the bacteria, or a 'fish tank bubbler' that oxygenates the coolant, but far the best thing to do is remove the oil before it becomes a problem.
So how does the skimmer work: Dead simple really. A belt, driven by a slowly rotating motor, dips into the tank, with a heavy roller on it's lower end to keep the belt reasonably taut. As the belt rotates, the surface oil tends to stick to the belt, and towards the top of the belt is a scraper that removes it into a duct leading to a 1 gallon can.
Well get on and fit it then! - I can't - it WASN'T delivered today as promised :bang:
But RS did at least deliver the Harting heavy duty 'HAN' plug and socket that I decided to use for it, as this style was already in use on the machine, so I did get that fitted in readyness.
I'll have to trepan a large hole in the top of the coolant tank, but that had better wait until the skimmer arrives so that I can check sizes, as I'll have to fabricate a bracket for it anyway.
(Picture here is of a similar belt skimmer that I fitted to the Beaver Partsmaster CNC Milling Machine)
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