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The chuck on that is just the same as the one on my old drill, the motor power of 220 W is not very much more then my 160 W, and the speeds shown are much the same too. Given that my motor is an old

I don't believe that is correct, the cutting speed would be dependent on the circumference of the part being turned. Circumference is calculated as Πr 2 ( Pi times the radius squared ). *To calculate

I think that if the cutting tool is small diameter compared to the thread being cut there will not be a problem. I can't get my brain around the multiple angles and helices and so on, but there will

Cutting speed refers to cutting speed of materials. For example the cutting speed of cast iron as shown in Machinery’s hand book is 50 feet per minute. A complete list of cutting speeds of materials

tomstechniques.com, which appears to be offline today published a chart with the formula that's being discussed. This is the chart and rule of thumb formula that I believe the original poster had

I imagine it's: CuttingSpeed = (RPM*4) / Diameter But what measure to use for diameter, Imperial or metric? 1000RPM * 4 / 2" = 2000 inches/minute (166 ft/min) 1000RPM * 4 / 50mm = 80 mm/min (3.15

CuttingSpeed = (CuttingSpeed * 4)/Diameter? Missing a parameter here? Sent: September 3, 2024 4:55 AM To: Keith S. Angus; [email protected] Subject: Re: [Unimat] 795, 895 (etc) DC motors Keith, The

3” probably won’t work with the standard threading tool. you’d need to raise the headstock to swing that. Maybe the setup that uses a threaded rod or headless fastener in a chuck to the left of

https://www.amazon.com/HiLetgo-Consistency-Controller-Adjustment-Helicopter/dp/B07TQSKLBK this kind of cheap test controller is directly connected with ESC and can adjust on device the speed of motor.

Many thanks for the suggestion and link!

Thanks Keith, there's some great ideas there, and the free-standing motor could be one of the three DC scooter ones I have already. I think the spindle would have to be inclined slightly to cut the

Thanks John - it could be pretty large (by Unimat standards :-)? up to 3", and 12 TPI is pretty chunky. Having said that there will probably be much finer threads as well. Cheers, Peter

I too have always used WD40 and recently I came across another make GT85 with PTFE and this works well too. I would think kerosene would give off a nasty smell I don't know I have not tried it. A few

On Sun, Sep 1, 2024 at 08:43 AM, Paul Allen wrote: > > A 160W motor on a drill press with a 1/2" chuck is highly unlikely. > Typically they are 8 amp motors at 120v (4 amp at 240v). That would be a >

I too use WD 40 for aluminium, works well, so well in fact I bought a gallon of it and a spray bottle.

Kerosene works great for cutting aluminum, and it is cheaper than WD40, even when you buy it in bulk. ________________________________ Sent: Tuesday, September 3, 2024 12:10 PM To: Keith S. Angus

Years ago, maybe here or one of the other groups, someone recommended using WD-40 as a coolant/lube when cutting Aluminum. I have done so ever since because I have found that I seem to have fewer

Keith, The formula for calculating cutting speed is four times cutting speed divided by the diameter. This has served me for over 50 years and never fails. I learned it in trade school. Dick --

If you are cutting hard brass then you can make cutters from silver steel (drill rod) and you don't need to harden them. If you do harden them and they get hot they will blunt, but you can let down

What diameter Peter? I was able to cut a .750 x 32 tpi both external and internal on the SL with the threading attachment. Best Regards John