LumberJocks

Disc Sander

  • Advertise with us
Project by Grulgor posted 06-04-2020 06:35 AM 879 views 4 times favorited 9 comments Add to Favorites Watch

New machine ready for my workshop: homemade disc sander.
It features a tiltable table (45-90°) which can be unmounted in seconds to change the sandpaper. A dust extraction system can be mounted. It has a fixed speed mode (1400 rpm) and a manual mode where the speed can me set manually from 0-1400rpm. The t-track will be added as soon as I have it available. This will allow me to mount a miter gauge or other jigs.





9 comments so far

View Redoak49's profile

Redoak49

4746 posts in 2765 days


#1 posted 06-04-2020 10:27 AM

Excellent job…A really good looking and functional sander.

View Jim Jakosh's profile

Jim Jakosh

24800 posts in 3882 days


#2 posted 06-04-2020 12:02 PM

That is a real beauty of a sander. I like you design and how you can snap off the front to change the sanding disc! Very nice work building it.

Cheers, Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

View BigAl98's profile

BigAl98

229 posts in 3815 days


#3 posted 06-04-2020 12:19 PM

The wood part looks excellent…the electrical…welllll..I don’t know. Can you elucidate the numerous wires on the back? It would seem to me, that you’d have only 1 romex NM wire (14/2) to the motor (115 VAC?)...is the var speed control in a separate box not pictured box? Also, how did you source the platten (metal circular disc) for mounting the sand paper and the motor. And the toggle switches?

-- Al,Midwest -To thine own self be true

View Grulgor's profile

Grulgor

54 posts in 639 days


#4 posted 06-04-2020 12:49 PM

Hahaha, you’re right. I still have to tidy up the electrical part and make a back part for the electrical compartment.
Here is the video of the sander running.

It is actually a very unique piece of motor, it is a 600W motor driven by a controller powered by a 48V power supply. The bearing is a ceramic bearing and it has magnetic drive. The speed can be set by analog input 0-10V and with a digital input I switch between fix speed mode (1400 rpm) and manual mode (0-1400rpm).
Maybe you noticed the hole next to the ON/OFF switch. It was for direction change. I wrote the firmware for this motor system by myself and planned also a direction switch, but then noticed that I misscalculated the amount of available space in the electrical compartment. As direction switch is actually overkill I dropped this idea.

View Brandon's profile

Brandon

4235 posts in 3728 days


#5 posted 06-04-2020 04:53 PM

That looks great! I’ve been pondering doing the same thing. How did you attach the motor to the disc piece?

-- "hold fast to that which is good"

View therealSteveN's profile

therealSteveN

5773 posts in 1350 days


#6 posted 06-04-2020 07:46 PM

Nice build

-- Think safe, be safe

View Grulgor's profile

Grulgor

54 posts in 639 days


#7 posted 06-04-2020 08:07 PM


That looks great! I ve been pondering doing the same thing. How did you attach the motor to the disc piece?

- Brandon

On this motor there was a aluminium flanch where I could mount the disc solidly with four screws. But on another motor (like this) you would need to make the flanch by yourself by putting a small disk of a couple of plywood on the rod of the motor and then screwing the disc to this homemade flanch.

View Grulgor's profile

Grulgor

54 posts in 639 days


#8 posted 06-05-2020 06:12 AM

If someone is interested in plans for this build, I have put them together and they can be purchased here.

View Vince's profile

Vince

1260 posts in 4205 days


#9 posted 06-05-2020 03:46 PM

Nice

-- Vince

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com