I've seen them before, Herb.
While they look nicely made and should work well, I'm concerned with the added weight putting a significant additional load on the tiny bearings and mechanism of the saw. I prefer a tool, or one of these that you use to turn the saw knob, but then you remove it before running the saw. The lower blade grip runs very close to the bottom of the table when the saw is at it's maximum up position, so I'm also concerned that something like this, if left on the saw, might hit the table bottom or surrounding parts too. DeWalt 788 bearings need re-lubrication or replacement about once a year if the saw is used heavily. It would likely be more often if these were added.
If I felt that I needed a tool to loosen or tighten the blade grips, I might get one of these, but I wouldn't leave it permanently attached to the saw. I've also seen where someone had hollowed out the end of a file handle to fit the knob on the saw.
Charley
While they look nicely made and should work well, I'm concerned with the added weight putting a significant additional load on the tiny bearings and mechanism of the saw. I prefer a tool, or one of these that you use to turn the saw knob, but then you remove it before running the saw. The lower blade grip runs very close to the bottom of the table when the saw is at it's maximum up position, so I'm also concerned that something like this, if left on the saw, might hit the table bottom or surrounding parts too. DeWalt 788 bearings need re-lubrication or replacement about once a year if the saw is used heavily. It would likely be more often if these were added.
If I felt that I needed a tool to loosen or tighten the blade grips, I might get one of these, but I wouldn't leave it permanently attached to the saw. I've also seen where someone had hollowed out the end of a file handle to fit the knob on the saw.
Charley