On Sep 12, 2024, at 3:47?PM, David P. Best via groups.io <dbestworkshop@...> wrote:

Mariusz,

I have not had any major issues with the North State sander. ?Mine is 3-phase with the 7.5 HP motor which appeared to me to have several voltage alternatives with wiring configuration changes noted on the electrical cover on the motor. ? I’m attaching the user manual for the Powermatic equivalent - parts are interchangeable and available from Powermatic or from Leneave. ?

If I were in your situation, I would ask Leneave to include a replacement rubber membrane for the air valve assembly - you can see it on page 18 in the attached marked as item #26. ?If you don’t already know, this sander requires compressed air which is used to sense the position of the sanding belt and drive the oscillation of the upper idler roller that slews the belts from side-to-side. ?I previously posted some information on how to adjust the slew rates at this link: ?? ?Click on the images to see a detailed description, and there is a simple video showing the belt oscillator operation when properly adjusted. ? Dust extraction is via a 4” port which I have found sufficient when paired with my RL-160.

As you can see from the manual, the feed rate can be changed from low 15 fpm to high 32 fpm by swapping gears. ?The feed mechanism and table moves up/down with a manual hand crank to adjust for stock thickness. ? When I bought mine, there were two choices for the elevation system in terms of how far the table would move for each turn of the crank. ?The choices were 0.20 or 0.40mm elevation change per revolution of the crank. ?I opted for the finer control and glad I did. ? I made a crude but effective hub which I use in conjunction with a cordless drill for quick feed table height changes - see image attached. ?I also added a Wixey digital readout for precise height indication which is crude but effective: ?. ?If I were to do it again, I’d opt for the more expensive?Accurate Technology alternative: ?

<WB Drill Drive Hub - 1.jpeg>

The machine has a removable platten that is simple but effective. ?Unless I’m sanding rough softwood, I use the patten to press the sanding belt against the material being sanded rather than letting it ride directly against the rubber coated belt drive. ?I have replaced the graphite impregnated cloth on the platten about 3 times in 20 years - Leneave can provide you with a sheet of this stuff when you order the machine. ?Photos attached. ?

<Removable Platen - 1.jpeg>? ?<Platen Graphite Cloth - 1.jpeg>

I did replace the rubber feed belt after about 20 years. ?Leneave has a relationship with a feed belt manufacturer and provided a replacement from them that was a breeze to install since it was designed to eliminate the need to disassemble parts of the sander like the original belt would have required. ??

The material feed system has two pressure rollers that force the material down against the feed belt to ensure good traction. ?The height of these rollers can be adjusted, and if not properly set, you can get leading or trailing edge snipe. ?Given what you’ve been through with your KF700 calibration, this would be a simple adjustment, but probably is not necessary until the feed belt is worn down substantially. ?

The brothers that own/operate Leneave are terrific to deal with. ?Hope this helps. ?

David Best
DBestWorkshop@...
https://www.flickr.com/photos/davidpbest/collections/
https://www.youtube.com/@David_Best

On Sep 12, 2024, at 1:28?PM, mariusz_m via groups.io <mariusz_m@...> wrote:

David, just called Leneave - they have no idea if there is someone in my neighborhood that might carry it, but interestingly enough they might be able to sell and ship it to me directly from Taiwan. We need to figure out the cost, logistics and if it would make any sense to do it, but that is an option. Have you had any issues with it? I’m only asking because I would be a bit concerned about parts. They could configure it for me for 3 phase 400V. Thank you for your help!

Mariusz