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if you talk to "pre anesthetic" dentists, they will tell you that life is much easier with anesthetic. Is this where I jump in and say something ridiculous like "buy this drill and get even"??? it's got that wonderful gizmosity that is lost with modern tools that do the same job better. I...

you are right ... that's exactly what it is ... The photo above is probably what you remember, the porcelain sink with water running all the time, a venturi siphon for sucking saliva, and that drill and no anesthetic - the little cup to the right of the round table to hold the mercury -...

I "restored" this Ritter dental drill, there is a detailed thread on another forum, but you'd have to join up to see it so I'll just paraphrase. if you happen to be a member, the direct link is here: OWWM posting about Ritter dental drill I want this thing out of my life, I'm way behind on...

I really don't understand the complaining about the price of points - the parts to make the ignitions shown in the schematics is $0 if you are willing to open up old CFLs or take apart a microwave or an old computer power supply. if $0 isn't cheap enough, you may be able to get paid for taking...

For your purposes you can make a solid state switch for about $3 if you use new parts and less if you scrounge. An scr and a resistor might well be sufficient, you can use a Reed relay and a magnet,a mechanical switch, an optical interruptor,and so on

I buy nuts in the standard sizes,not sure I have 1 3/4 by 8. A tap from ebay is also cheap, why are you messing with metric threads?

Tell your friend to Pat no more than one half is value as scrap metal. After pulling a few good parts off it, the rest will become scrap unless someone else wants parts for their machine

WRT the relay voltage issue, most aircraft, which admittedly are smaller than large manufacturing plants, use 28VDC for relays and distribute 115VAC 400 Hz 3-phase for most electronics and other uses. 28VDC is important because it is below the value that is considered a safety risk in the MIL...

That's a bit of an exaggeration, if the mechanisms are good, it's not hard to retrofit the control system. Oftentimes though, the mechanical stuff is also gravity worn

Use diamond for carbide. Yes it will be destroyed by steel unless you are careful to not let it get hot

that's helpful and clarifies the meaning - I wonder how it came to have that name.... Lagging to me usually means following behind... <consulting Oxford English Dictionary>...it says Lagging (the action of the verb Lag) ... the action of covering boiler, an arch, a wall, etc with strips of wood...

this is a small tool post grinder made from what I think is probably WWII era surplus stuff - the box is from some kind of restaurant equipment ("roaster"), the motor and control look like military surplus - see motor tag for motor details - to make this easy, I had a power supply sitting around...

ok, I learned the word "lagging" from this thread, as metal you wrap around a cylinder - why is it called "lagging"? there is "cladding" that is somewhat similar .....???? curious minds want to know

I think what is shrinking is the number of people who imagine that the manual might tell them anything is striking. And the number of people who can read, understand, and follow instructions is shrinking to zero

Thanks, fixed it, I use both...

these are from a high end audio equipment manufacturer that went belly up about 20 years ago - I have around 20 of them, see photo - $6 for one, $20 for 5 $50 for 15 (prices for quantities stand until I run out). Shipping in the USA will be no more than $10, no matter how many you buy - I...

QT-500-3 1/2 = 1/2 inch square bar, 3 1/2 inches long, Right hand uses TPCB, TBCG, TPCH, TPMT-22 inserts, I have 5 of these, new, $15 each, all 5 for $50 (if 5 remain) BT-625-6 = 5/8 inch square bar, 6 inches long, Right Hand, uses TPCB, TBCG, TPCH, TPMT-32 inserts, I have 3 of these, $18 each...

these are from an estate. From left to right, All sold Circle Machine FT-250-2-1/4 This is a 1/4" square bar 2.3 inches long, Right hand cutting, uses TPCB, TPCG, TPCH, TPGT or TPMT cutters $11 probably also Circle Machine, but a custom order, 019-00572-SPEG. 1/4" square bar, angled rear for...

as shown, from a friend's estate, all the dies are there, some taps are missing - nice little model-maker's set $35 plus shipping - in the USA shipping will be under $10 anywhere in the country. you can ask about international, typically at least double sometimes more

brass parts from some 1970s test equipment that was worth more as parts than as what it was originally - it's imperal, not metric, 1/8" shafts (except for a 1/4" portion), the two gears make a 90 deg turn for the shaft, the other parts moved a tape with numbers on it past a window. add...