Hola gracias por compartir tan valioso proyecto felicidades existirá la posibilidad de existir planos lo pueda compartir gracias estaré muy agradecido estoy abierto a la comunicacion
Muy buen trabajo ni quiere vender ni maquina ni planos los mejores maestros enseñan todo lo que saben como el estraordinarioEDISON de METAL EXTREME COLOMBIA los que no ponen medidas les considero alumnos aventajados muchas gracias por darnos embidia
Likely he is using a vehicle windshield wiper motor with a speed controller. You can see him mounting a 12Vdc power supply with cooling fan at 16:08 and I think you can hear the motor in the background at 16:44 This appears to have been 2 oopsies. For the DC power supply cooling fan, I didn't see a hole for the inlet air (would want a good filter over it) and at 16:40 he seems to notice something isn't quite right. With all of the dust created, I would suggest mounting this on top of the machine and not the bottom, or better I think you can also use power supplies like they have for laptop computers, eliminating the need for a special housing and cooling fan. Depending on the current draw, I think you can get these for around $10. I think the wiper motor is mounted in the box at 16:55 There are only 2 wires going in, so the PWM speed controller must be mounted at the switch. It appears he is gearing the speed down slightly with the belts. This might be another oopsie. Given the feed speed and his running the same board multipole times, he might have wanted to go with a larger reduction in speed. 17:34 you can see the box with the on/off switch and dial for speed. I suspect the speed controller is in this box. Here he is feeding it through several times, but could have alternatively slowed the belt, unless it isn't geared down enough (wiper motors have a minimal speed around 60 RPM). If the speed controller is in this box, it might be another oopsie. Most speed controllers generate a lot of heat. There's no route for cooling air in this. Wiper motors are rather cheap and you can order from places like Wal Mart for under $24, and you can always go to a vehicle scrap yard. Once you get the wiper motor and have it's specs, I think you can match with off the shelf 12Vdc PWM speed controllers based on current draw (under $10). In a nutshell, PWN speed controller drop the voltage at its output to the motor. There is a minimum voltage to run the wiper motor, so to reduce stress on the motor, I would suggest adding a stop to the speed dial so the motor is never stopped when voltage is applied. Also at 20:20 you can see a separate switch for the drum motor.
Hey, Dude...thats a very impressive build. It works great. But for your own safety...please add a Belt guard to the machine. And maybe mounting 4 castors to the thing was not the best solution.... Subscribed and greets from Germany..
Thanks for your comments.. I absolutely agree with you.. I should have mounted Belt guard for safety.. and casters is not good idea.. Thank u for your advise..
Sorry for late reply, cut several donuts from 18mm thick plywood and laminated these donuts.. and tucked steel shaft inside of donuts hole.. simple.. right??
![HOMEMADE DRUM SANDER THICKNESS SANDER [아빠네공방, 다율나무공방]](/img/logo.svg){kind=logo}
