First i would like to point out the lack of coolant and the fact that if this is a HSS or carbide endmill which i am assuming it is, this would not be sparking like this.
I call lies on your comment, it doesn't spin at the rpm of a manual mill but supposedly to the rpm of a cnc, so without coolant or any type of cooling you're gonna see sparks, especially on carbon steels or tool steels
@@worldsmostrandomvideos7566If it's cutting hardened steel it's pretty much meant to cut dry and... like that. Bonus sparks for low rigidity of smaller machine...
Did some digging found the manufacturer. The price is pretty cheap, however whenever I see something that looks this good online with that low of a price. Never good. A lot of these are as low as $4,000. In the business that's a steal. But I don't trust something that's too good to be true
Yea bad tolerances and low quality rails motors etc I'd love to purchase the castings, scrape them all in, buy high quality ball screws and rails, high quality motors and drivers, top notch spindle, then dial in all the work myself.. I wonder if I'd be able to achieve 5micron repeatability
Looks pretty heavy duty for me. For steel, that is a bad motor choice. Steel is all sub-8000 RPM. You want a sub-8000 peak RPM (rated speed 2000 RPM or lower) spindle motor.
@@hiddenworldforge374 5000 RPM is low RPM for a router spindle. Also, 5000 is clearly below 8000...which means you're not even contradicting what I said. Even if you get a Carbide Endmill 3/8" with AlTiN (or similiar) coating Steel being a lower RPM material is a function of the tooling's SFM rating for steel. For a 3/8" premium carbide endmill with the proper coating it will have an SFM rating for mild steel at a minimum of 500 (maybe more) Which means 5000 RPM is an acceptable RPM. If you are typically going to be running the spindle in RPM ranges that makes sense for steel it makes no sense to get a spindle with a crazy high max RPM of 24k or so and a rated RPM of 10000. The rated torque of the motor is a function of its HP and its rated RPM. Two motors with the same HP rating but one has 1750 RPM rating and the other has a 10000 RPM rating the 1750 rated one will generate 5.7 times more torque than the high rpm one.
@@hiddenworldforge374 the spindle in this looks very similar to the cheap high frequency spindles you can get from china. they usually have 18k or even 24k RPM and almost no torque below 8k RPM so they would be a bad choice for milling steel.
A high end 8mm end mill on mild steel gave the best tool life/cost effectiveness at around 9k rpm. With a 4mm carbide tool or on softer materials it was straight up pegged at it's 12k maximum
@@AlexIstEinGottdas ist doch wiederum nur eine einstellungs Sache beim.vorschub und der Schnitt tiefe . Hohes Drehmoment braucht man auch nur wenn man viel zustellt und langsam dreht mit hohem Vorschub . Oder liege ich da falsch aus ihrer Sicht .
All of those screws and all the ways should have been covered to protect against that irresponsible use of demonstration with sparks and chips. I would now not buy that unit.
