Modified Portaband

KnuckleDownKnives

Time to make the doughnuts..
Joined
Feb 12, 2015
Messages
1,715
Decided to finally start building a belt grinder this weekend and wanted to get a better cut than cutting by hand with the portaband. I found this junk cut off saw at the dump and decided to modify the base of it to mount the portaband to. After a slight shim in the mount the cuts come out superb.



I found some 3/4 inch hard conduit connectors in one of my parts bins that fit over the shaft after filing the tips off the threads and they had a good snug fit with still being able to rotate. Welded four of them end to end and trimmed for the arm mount.



I took a speed square and checked the angle of the blade to the mount where the front handle was on the saw and it looked close enough to 45 degrees I figured that's what is was. I didn't think they would make it some weird angle being as close as it looked.





The arm mounts where the front handle mounted. I do need to make a notch in the corner as there isn't enough room to rotate the blade tensioner quite enough to remove or replace the blade, but that is an easy fix. It is quite side heavy now but I will be welding a piece of angle iron on to prevent from tipping..



I did have to put a very thin shim under the left side of the arm where the screw goes into the saw which I will eventually tack weld in place as well as drill and tap for 1/4 x 20 screws for a stronger connection, but as you can see it cuts very true and straight.

 
Nice mod! I am working on a grinder build myself, and one of the biggest problems I've ran into was getting my cuts square. Even the bandsaw I had access to at work didn't cut square. What a pain!!


Sent from my iPhone using Tapatalk
 
Now that is impressive! With skills to make that, a 2X72 grinder will be easy for you.

Ken H>
 
Back
Top