exchanged1
Member
- Joined
- Feb 29, 2008
- Messages
- 8
I have older Domino DF 500 with the locating pins. I am having two problems with mortise alignment. I hope pictures will help you in understanding the issues.
In the first photo, you will see mortises cut with the Domino set on a center line, using a 6mm bit, and the mortise width set (from left to right in the photo) at the "Standard Width", "+6mm", and "+10mm", all as shown on page 8 of the Supplemental User's Manual. For each cut, the motor was running as I rotated the adjustment dial. Additionally, prior to taking the photos, I calibrated the Horizontal Position Gage (as shown on page 22 of the Supplemental User's Manual) to assure the horizontal positioning was correct. PROBLEM: In each cut, the mortise is not centered on the center line; the mortise is offset to the right by 2mm to 3mm on each cut.
[attachimg=#]
The second photo differs from the one, above, only in the fact that I used an 8mm bit, instead of the 6mm bit. Again, prior to taking the photos, I calibrated the Horizontal Position Gage (as shown on page 22 of the Supplemental User's Manual) to assure the horizontal positioning was correct. PROBLEM: Again, each mortise is not centered on the line; each mortise is offset to the right by 3mm.
[attachimg=#]
The third photo shows a different alignment issue. PROBLEM: You will see that cutting mortises using the right and left locating pins results in significant differences in the distances from the right and left edges of a board to the starting point of the mortise. Again, the difference is approximately 3mm.
[attachimg=#]
To correct the locating pin problem, I attempted to "Calibrate the Locating Pins", as that process is described on page 21 of the Supplemental User's Manual. Unfortunately, the "Eccentric Bushing" (with the setscrew totally out of the Domino) was pretty much seized. I made several attempts at rotating the Bushing to the right (to increase the distance of the right mortise from the right edge of the piece of wood), all without getting any rotation, at all. I then applied penetrating oil over a two day period. At last, the Bushing would rotate to the left with great difficulty. I was able to rotate it a quarter-turn to the left from the neutral position. It would not turn to the right, at all. The two photos, below, show the Bushing in its rotated position. PROBLEM: Is the Eccentric Bushing normally so difficult to rotate? Is there a "trick" to making this rotation? Even in the Bushing's rotated position, the mortises referenced above all remain skewed as described.
[attachimg=#]
[attachimg=#]
Am I doing anything that is obviously incorrect?
Am I correct in assuming that mortises cut using a centerline should be centered on that line?
Do I just need to ship the Domino to the repair facility?
I sincerely appreciate any help that might be provided.
Thank you, very much.
John
In the first photo, you will see mortises cut with the Domino set on a center line, using a 6mm bit, and the mortise width set (from left to right in the photo) at the "Standard Width", "+6mm", and "+10mm", all as shown on page 8 of the Supplemental User's Manual. For each cut, the motor was running as I rotated the adjustment dial. Additionally, prior to taking the photos, I calibrated the Horizontal Position Gage (as shown on page 22 of the Supplemental User's Manual) to assure the horizontal positioning was correct. PROBLEM: In each cut, the mortise is not centered on the center line; the mortise is offset to the right by 2mm to 3mm on each cut.
[attachimg=#]
The second photo differs from the one, above, only in the fact that I used an 8mm bit, instead of the 6mm bit. Again, prior to taking the photos, I calibrated the Horizontal Position Gage (as shown on page 22 of the Supplemental User's Manual) to assure the horizontal positioning was correct. PROBLEM: Again, each mortise is not centered on the line; each mortise is offset to the right by 3mm.
[attachimg=#]
The third photo shows a different alignment issue. PROBLEM: You will see that cutting mortises using the right and left locating pins results in significant differences in the distances from the right and left edges of a board to the starting point of the mortise. Again, the difference is approximately 3mm.
[attachimg=#]
To correct the locating pin problem, I attempted to "Calibrate the Locating Pins", as that process is described on page 21 of the Supplemental User's Manual. Unfortunately, the "Eccentric Bushing" (with the setscrew totally out of the Domino) was pretty much seized. I made several attempts at rotating the Bushing to the right (to increase the distance of the right mortise from the right edge of the piece of wood), all without getting any rotation, at all. I then applied penetrating oil over a two day period. At last, the Bushing would rotate to the left with great difficulty. I was able to rotate it a quarter-turn to the left from the neutral position. It would not turn to the right, at all. The two photos, below, show the Bushing in its rotated position. PROBLEM: Is the Eccentric Bushing normally so difficult to rotate? Is there a "trick" to making this rotation? Even in the Bushing's rotated position, the mortises referenced above all remain skewed as described.
[attachimg=#]
[attachimg=#]
Am I doing anything that is obviously incorrect?
Am I correct in assuming that mortises cut using a centerline should be centered on that line?
Do I just need to ship the Domino to the repair facility?
I sincerely appreciate any help that might be provided.
Thank you, very much.
John
