#hazzy Logs

Aug 02 2020

05:21 AM JT-Cave: morning
07:46 AM hazzy-m: Morning
09:55 AM JT-Cave: TurBoss, like this? https://www.amazon.com/IRF520-MOSFET-Driver-Arduino-Raspberry/dp/B07F7SV84V
09:56 AM TurBoss: yes if it suits your volts and amps
09:57 AM TurBoss: 5A 24V max
09:58 AM TurBoss: you can apply pwm to it
09:58 AM TurBoss: from the pi
01:21 PM Joco[m]: hazzy: pulley installed on surface grinder motor and all installed. Had to relief the kneck so as to not interfere with the height lead screw.
02:36 PM hazzy-m: Sweet!
08:19 PM Joco[m]: test run. Excuse the shaky phone camera work and the horrible commentary: https://drive.google.com/file/d/1ub_B4fQoBLiYEwi7ORNbgbit3N6-4G4v/view?usp=sharing
08:22 PM Joco[m]: hazzy: the built pulley then another pick as I contour the neck to avoid interference with vertical lead screw
08:23 PM * Joco[m] uploaded an image: image.png (45KB) < https://matrix.org/_matrix/media/r0/download/matrix.org/yXwWwlEGaMRLaDgewkfuFcxO >
08:23 PM * Joco[m] uploaded an image: image.png (41KB) < https://matrix.org/_matrix/media/r0/download/matrix.org/iTESXltSLNPHDzCVBXEyztxO >
08:27 PM hazzy-m: Joco: sweet! Sounds like she's running very smoothly
08:28 PM hazzy-m: machine looks to be in very decent shape overall
08:28 PM hazzy-m: were you able to tell how the pulley got damaged?
08:28 PM Joco[m]: a little wear I think but not bad for 40 yrs.
08:31 PM Joco[m]: At least I know where the wear is. At some point I will look to address it but for the time being I think she's doing well. Going to get her back together and do some more test grinds. Will be interesting to see if I have improved things with that smoother running pulley. The next stage would be either static balancing of the wheels or build a dynamic balancer to go on the wheel "collets".
08:31 PM Joco[m]: Assuming I am still getting some small "waves" or "chatter" in the finish.
08:31 PM Joco[m]: It was very minor before.
08:33 PM Joco[m]: no idea. I wonder if someone dropped the motor when it was out. OR it has just deformed over time. It was cast ali and seemed pretty brittle