How to advice variable speed 1x30 sander

Bill DeShivs said:
These are real grinders, not the cheap little 1 X 30s.
Contact wheel, platen, vertical/horizontal, forward/reverse variable speed.
Click to expand...

Cute little cuddly thing makes ya want one!
Seriously, very intriguing. Thanks for sharing, Bill!
 
Dimmer switches and rheostats won't do the job on reducing most grinder motors. It may slow the motor down, but you lose almost all torque and may severely overheat the motor.
Changing the frequency or voltage will not work on a single-phase motor.
On a 3-phase changing the frequency will vary the speed.
On a DC motor, changing the voltage is what works.
Only Universal motors can be speed controlled by a rheostat type control or dimmer switch.
I always say to people who ask, "If speed control on a grinder was that simple whey would there be any other type of speed control ... and why wouldn't every grinder come with one on it."
 
Bill DeShivs said:
These are real grinders, not the cheap little 1 X 30s.
Contact wheel, platen, vertical/horizontal, forward/reverse variable speed.
Click to expand...
The best way to find these little sanders is to put "762x25MM Belt" in a search on eBay or Amazon. They are basically using a servo motor like those sold at servomotorkit. These little motors are popular with the mini mill and lathe guys for motor retrofits.
 
LCoop said:
Wow very interesting. I could see lots of uses for that in a knife shop for the price.
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The version you want to get has a black logo on the base and says TOOLCKER. I assume that is Chinese idea of Tool C Ker as in Tool Seeker. You can also do a search for these types of motor as "Sewing Machine Servo Motor", as they were originally designed with upgrading sewing machines.
Bill DeShivs said:
It should be here within a week. I'll give a thorough report as soon as it's set up.
Click to expand...

There are various versions of these motors, but I think this little sander has the one that allows programing of soft stop (braking) and start (ramp up speed). Go to servomotorkit on a PC browser and look at the programming page (PCB Codeing) for various programing certain versions of these controllers allow. Maybe not as important to this little sander but for the Mini Mill and Lathe modifications the various programing setting can be useful. Some manufactures of these motors don't allow all the various programming.
 
I was at our local Treasure Chest Store (Amazon return store) where the price for everything is $1, $2, $4, or $10 depending on the day of the week. They have giant tables piled with boxes that you have to peek inside, and other items with no box anymore. I got a bunch of stuff including a 135 amp MIG/stick welder, a 6.5 amp battery for my Ryobi One+ tools, and .......... a box with a gross of 2X42" 400 micron (60 grit) ceramic belts. It was $4 day, so I paid a tad less than 3 cents per belt. I filled a shopping cart of tools and stuff up for $64. I'll probably give away the belts.
 
Search "toolcker" on YouTube and you will find a handful of videos showing this little sander. These DC servo motors have great torque at low speeds.
And check this YouTube channel for more info about the motor and the ways they can be used https://youtube.com/@danielmartin382

especially this one you might find interesting
 
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please post a review of that 1 x 30 when you get it in- I have been looking for a decent one that doesn’t cost a fortune
 
Bill DeShivs said:
These are real grinders, not the cheap little 1 X 30s.
Contact wheel, platen, vertical/horizontal, forward/reverse variable speed.
Click to expand...
Curious how it works for you... Looks like a knock off of the Fucina 1x30
 
OK- I was finally able to set up and mount the little grinder. Not much to it- just install the platen or contact wheel and plug everything in.
I love it! Now- it may not be the cat's rectum for some people, but my work is much different from the average knifemaker, as most of my work is restoration of various folding and fixed blade knives.
Regrinding a penknife blade on a 2 X 72, even at low speed is interesting. It should be much different on this little thing. It's as solid as it can be. It converts to horizontal by loosening 2 allen screws. I have never seen a use for a horizontal grinder, but maybe I will now that I have one
I figured the motor would be DC, but apparently it's a 220V motor with a VFD. Can't really tell, because all the motor spec categories are in Chinese.
At very low speed, I pushed a piece of steel darned hard using the contact wheel. It didn't even slow down. Runs very quietly.
The grinder is actually tiny. It takes up no more space than the Harbor Freight 1 X 30s except for the VFD-which can be mounted remotely.
Pictures soon. I can say that if you feel a need for a 1 X 30 belt grinder, don't even waste your money on the cheap ones. This one was $404 delivered and worth every penny.
 
Bill DeShivs said:
OK- I was finally able to set up and mount the little grinder. Not much to it- just install the platen or contact wheel and plug everything in.
I love it! Now- it may not be the cat's rectum for some people, but my work is much different from the average knifemaker, as most of my work is restoration of various folding and fixed blade knives.
Regrinding a penknife blade on a 2 X 72, even at low speed is interesting. It should be much different on this little thing. It's as solid as it can be. It converts to horizontal by loosening 2 allen screws. I have never seen a use for a horizontal grinder, but maybe I will now that I have one
I figured the motor would be DC, but apparently it's a 220V motor with a VFD. Can't really tell, because all the motor spec categories are in Chinese.
At very low speed, I pushed a piece of steel darned hard using the contact wheel. It didn't even slow down. Runs very quietly.
The grinder is actually tiny. It takes up no more space than the Harbor Freight 1 X 30s except for the VFD-which can be mounted remotely.
Pictures soon. I can say that if you feel a need for a 1 X 30 belt grinder, don't even waste your money on the cheap ones. This one was $404 delivered and worth every penny.
Click to expand...
Hey Bill, I'm curious... Does it have a way to mount the platen in the original mode for squaring up spines and such? (tip repair)
 
Bill DeShivs said:
OK- I was finally able to set up and mount the little grinder. Not much to it- just install the platen or contact wheel and plug everything in.
I love it! Now- it may not be the cat's rectum for some people, but my work is much different from the average knifemaker, as most of my work is restoration of various folding and fixed blade knives.
Regrinding a penknife blade on a 2 X 72, even at low speed is interesting. It should be much different on this little thing. It's as solid as it can be. It converts to horizontal by loosening 2 allen screws. I have never seen a use for a horizontal grinder, but maybe I will now that I have one
I figured the motor would be DC, but apparently it's a 220V motor with a VFD. Can't really tell, because all the motor spec categories are in Chinese.
At very low speed, I pushed a piece of steel darned hard using the contact wheel. It didn't even slow down. Runs very quietly.
The grinder is actually tiny. It takes up no more space than the Harbor Freight 1 X 30s except for the VFD-which can be mounted remotely.
Pictures soon. I can say that if you feel a need for a 1 X 30 belt grinder, don't even waste your money on the cheap ones. This one was $404 delivered and worth every penny.
Click to expand...
Bill, the voltage supplied to the motor is D.C..
 
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