Dustin Smith
02-11-2011, 9:36 PM
Ok guys, this issue is going to make me pull my hair out.
I bought a used Jet Xacta Saw Deluxe last fall, and one of the first things I did for it was make a zero clearance insert out of MDF. The saw came with a Ridgid 60T which I have been using since day one. The blade has since worked fine with the ZCI until last night. Last night I bought my first dado set, a Freud Super Dado, and installed it (stacked to 23/32") to play around with it. Afterwards, I removed the dado stack and reinstalled the 60T blade.
When I put the ZCI back on the saw, I noticed it felt like it was rubbing against the teeth on the back of the blade. I thought maybe the angle of the blade changed during my blade swap process, but I checked it with a digital "Angle Cube" and it was perfect 90.0° to the table. I fully lowered the blade, turned on the saw, and slowly raised the blade up through the ZCI. It made an audible screeching sound, and when I turned the saw off the blade quickly stopped spinning due to the friction of rubbing against the ZCI.
I checked my blade-to-miter slot alignment. The blade was perfectly parallel to the miter slot, as it was before I played with the dado set (I used a dial indicator).
I checked my 60T blade runout, and it is 0.004". I understand this is acceptable for a saw blade.
What am I doing wrong? Why is my blade suddenly rubbing against the ZCI? Will this happen every time I change blades?
Thanks
Dustin
I bought a used Jet Xacta Saw Deluxe last fall, and one of the first things I did for it was make a zero clearance insert out of MDF. The saw came with a Ridgid 60T which I have been using since day one. The blade has since worked fine with the ZCI until last night. Last night I bought my first dado set, a Freud Super Dado, and installed it (stacked to 23/32") to play around with it. Afterwards, I removed the dado stack and reinstalled the 60T blade.
When I put the ZCI back on the saw, I noticed it felt like it was rubbing against the teeth on the back of the blade. I thought maybe the angle of the blade changed during my blade swap process, but I checked it with a digital "Angle Cube" and it was perfect 90.0° to the table. I fully lowered the blade, turned on the saw, and slowly raised the blade up through the ZCI. It made an audible screeching sound, and when I turned the saw off the blade quickly stopped spinning due to the friction of rubbing against the ZCI.
I checked my blade-to-miter slot alignment. The blade was perfectly parallel to the miter slot, as it was before I played with the dado set (I used a dial indicator).
I checked my 60T blade runout, and it is 0.004". I understand this is acceptable for a saw blade.
What am I doing wrong? Why is my blade suddenly rubbing against the ZCI? Will this happen every time I change blades?
Thanks
Dustin