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CF 731 Pro Jointer Snipe / Adjustment
Hi All,
?
My YR 2000 CF 731 suddenly decided to give me snipe on the trailing end of my work piece. This began after I made adjustments to the temple bolts to fix an issue of my work piece hitting the leading edge of the outfeed table. This occurred, as they say, sua sponte. Not sure why, but spent the requisite mountain of hours chasing the issue down. I got my cutter block parallel to the outfeed table within .001", following David Best's technique, using my One Way gauge. After that adjustment, I tightened the table down, and got a perfect, dead-flat cut. Admittedly, the board I was jointing was only 13" long, so that was probably a poor test. But, still, I thought I was done! Then I noticed that the temple bolt closest to the cutter block was wobbly when the table wasn't secured. I realized that the jam nut beneath the machine chassis wasn't cinched. I removed the interior cover plate and found the jam nut, and carefully tightened it. I then lowered the bed, tightened the cam lever, and took another cut. SNIPE at the last 1" or so of the board. Curses. I checked the cutter block. It was still within .001 of parallel. I checked the knife height, using my straight edge. It contacted the knives and moved about 6mm. Way too much.
?
I talked to Felder this morning and their advice was to tinker very gingerly with the temple bolt closest to the cutter block, but I assume this will only drive the outfeed table out of parallel to the cutter block.
?
Should I start the whole process from the beginning and double-check that the cutter block and outfeed are parallel, and then attempt to set the outfeed at the correct height (per David Best .039") relative to the cutter block by using the lever mechanism beneath the outfeed table? Does that lever mechanism raise/lower the entire table in plane along the ways, or does it merely tilt the table relative to the cutter block, to produce convex or concave cuts. The latter is what the original owner's manual says it does and what the Felder tech told me it does, but doesn't seem likely given how the table is secured in the ways.
?
Is there a cure for what ails my jointer?
?
Thanks for the help!
?
Greg
?
? |
Move the outfeed table up to the point where it is .001" below the cutting diameter of the blades. Brian Lamb blamb11@... lambtoolworks.com
On Monday, September 23, 2024 at 11:55:52 AM MST, Greg Goldin <goldinarch@...> wrote:
Hi All,
?
My YR 2000 CF 731 suddenly decided to give me snipe on the trailing end of my work piece. This began after I made adjustments to the temple bolts to fix an issue of my work piece hitting the leading edge of the outfeed table. This occurred, as they say, sua sponte. Not sure why, but spent the requisite mountain of hours chasing the issue down. I got my cutter block parallel to the outfeed table within .001", following David Best's technique, using my One Way gauge. After that adjustment, I tightened the table down, and got a perfect, dead-flat cut. Admittedly, the board I was jointing was only 13" long, so that was probably a poor test. But, still, I thought I was done! Then I noticed that the temple bolt closest to the cutter block was wobbly when the table wasn't secured. I realized that the jam nut beneath the machine chassis wasn't cinched. I removed the interior cover plate and found the jam nut, and carefully tightened it. I then lowered the bed, tightened the cam lever, and took another cut. SNIPE at the last 1" or so of the board. Curses. I checked the cutter block. It was still within .001 of parallel. I checked the knife height, using my straight edge. It contacted the knives and moved about 6mm. Way too much.
?
I talked to Felder this morning and their advice was to tinker very gingerly with the temple bolt closest to the cutter block, but I assume this will only drive the outfeed table out of parallel to the cutter block.
?
Should I start the whole process from the beginning and double-check that the cutter block and outfeed are parallel, and then attempt to set the outfeed at the correct height (per David Best .039") relative to the cutter block by using the lever mechanism beneath the outfeed table? Does that lever mechanism raise/lower the entire table in plane along the ways, or does it merely tilt the table relative to the cutter block, to produce convex or concave cuts. The latter is what the original owner's manual says it does and what the Felder tech told me it does, but doesn't seem likely given how the table is secured in the ways.
?
Is there a cure for what ails my jointer?
?
Thanks for the help!
?
Greg
?
?
|
Using the height adjustment lever, forgot to mention that. That is what it is there for. Brian Lamb blamb11@... lambtoolworks.com
On Monday, September 23, 2024 at 12:05:51 PM MST, Brian Lamb <blamb11@...> wrote:
Move the outfeed table up to the point where it is .001" below the cutting diameter of the blades. Brian Lamb blamb11@... lambtoolworks.com
On Monday, September 23, 2024 at 11:55:52 AM MST, Greg Goldin <goldinarch@...> wrote:
Hi All,
?
My YR 2000 CF 731 suddenly decided to give me snipe on the trailing end of my work piece. This began after I made adjustments to the temple bolts to fix an issue of my work piece hitting the leading edge of the outfeed table. This occurred, as they say, sua sponte. Not sure why, but spent the requisite mountain of hours chasing the issue down. I got my cutter block parallel to the outfeed table within .001", following David Best's technique, using my One Way gauge. After that adjustment, I tightened the table down, and got a perfect, dead-flat cut. Admittedly, the board I was jointing was only 13" long, so that was probably a poor test. But, still, I thought I was done! Then I noticed that the temple bolt closest to the cutter block was wobbly when the table wasn't secured. I realized that the jam nut beneath the machine chassis wasn't cinched. I removed the interior cover plate and found the jam nut, and carefully tightened it. I then lowered the bed, tightened the cam lever, and took another cut. SNIPE at the last 1" or so of the board. Curses. I checked the cutter block. It was still within .001 of parallel. I checked the knife height, using my straight edge. It contacted the knives and moved about 6mm. Way too much.
?
I talked to Felder this morning and their advice was to tinker very gingerly with the temple bolt closest to the cutter block, but I assume this will only drive the outfeed table out of parallel to the cutter block.
?
Should I start the whole process from the beginning and double-check that the cutter block and outfeed are parallel, and then attempt to set the outfeed at the correct height (per David Best .039") relative to the cutter block by using the lever mechanism beneath the outfeed table? Does that lever mechanism raise/lower the entire table in plane along the ways, or does it merely tilt the table relative to the cutter block, to produce convex or concave cuts. The latter is what the original owner's manual says it does and what the Felder tech told me it does, but doesn't seem likely given how the table is secured in the ways.
?
Is there a cure for what ails my jointer?
?
Thanks for the help!
?
Greg
?
?
|
开云体育Greg,Snipe on trailing edge in general is an indicator of the outfeed table being lower than the arc of cut it top dead center of the blade. As the material leaves the infeed table it would cause the snipe as the outfeed is lower. I would do exactly what Brian said and hopefully that would take care of it. I am mostly responding to mention that, on occasion, I have had pieces that catch on the outfeed table on approach. In my case it has been due to the bow in the piece. The issue goes away on subsequent passes. So just a word of caution, try again or joint a different board before any adjustments. Imran Malik On Sep 23, 2024, at 2:55?PM, Greg Goldin via groups.io <goldinarch@...> wrote:
? Hi All,
?
My YR 2000 CF 731 suddenly decided to give me snipe on the trailing end of my work piece. This began after I made adjustments to the temple bolts to fix an issue of my work piece hitting the leading edge of the outfeed table. This occurred, as they say, sua sponte. Not sure why, but spent the requisite mountain of hours chasing the issue down. I got my cutter block parallel to the outfeed table within .001", following David Best's technique, using my One Way gauge. After that adjustment, I tightened the table down, and got a perfect, dead-flat cut. Admittedly, the board I was jointing was only 13" long, so that was probably a poor test. But, still, I thought I was done! Then I noticed that the temple bolt closest to the cutter block was wobbly when the table wasn't secured. I realized that the jam nut beneath the machine chassis wasn't cinched. I removed the interior cover plate and found the jam nut, and carefully tightened it. I then lowered the bed, tightened the cam lever, and took another cut. SNIPE at the last 1" or so of the board. Curses. I checked the cutter block. It was still within .001 of parallel. I checked the knife height, using my straight edge. It contacted the knives and moved about 6mm. Way too much.
?
I talked to Felder this morning and their advice was to tinker very gingerly with the temple bolt closest to the cutter block, but I assume this will only drive the outfeed table out of parallel to the cutter block.
?
Should I start the whole process from the beginning and double-check that the cutter block and outfeed are parallel, and then attempt to set the outfeed at the correct height (per David Best .039") relative to the cutter block by using the lever mechanism beneath the outfeed table? Does that lever mechanism raise/lower the entire table in plane along the ways, or does it merely tilt the table relative to the cutter block, to produce convex or concave cuts. The latter is what the original owner's manual says it does and what the Felder tech told me it does, but doesn't seem likely given how the table is secured in the ways.
?
Is there a cure for what ails my jointer?
?
Thanks for the help!
?
Greg
?
?
|
Hi Brian and Imran,
?
First, thanks for the super-speedy, and helpful replies.
?
I will try jointing a different piece of wood before playing around with the height adjustment.
?
And, I'll aim for .001" below the cutting diameter of the knives if I have make the adjustment.
?
Much appreciated.
?
Greg |
开云体育Hi Greg,My comment was in general when material catches on outfeed all of a sudden while machine has been working fine. Since you are getting a snipe I would do what Brian recommended. Imran Malik On Sep 23, 2024, at 4:31?PM, Greg Goldin via groups.io <goldinarch@...> wrote:
? Hi Brian and Imran,
?
First, thanks for the super-speedy, and helpful replies.
?
I will try jointing a different piece of wood before playing around with the height adjustment.
?
And, I'll aim for .001" below the cutting diameter of the knives if I have make the adjustment.
?
Much appreciated.
?
Greg
|
开云体育On your YR2000 731, the lever mechanism moves the entire table up/down - it’s not supposed to tilt the table. ?You do not want to screw around with the temple bolts to eliminate snipe. ?And be careful with the jam nut - those bolts are very soft steel and it’s easy to fracture them into two pieces if you start reefing hard on the jam nut - I’ve done it.?? Once the outfeed table is properly aligned to be coplanar to the infeed table, just lower the outfeed table, and bring it upward. ?Always adjust it in the “going up” mode. Brian has a good starting suggestion as a starting point for outfeed table height. ?But you may need to make small adjustments with trial/error testing to results on scrap material. I’ll quote from my published writeup: "In practice, the ideal way to set the outfeed table height is to adjust it so that the material coming off the infeed table does not produce snipe, nor does it get hung up on the leading edge of the outfeed table. There is a range of a few thousandths in table elevation where this condition exists, and adjusting the outfeed table height within that small range can have some tiny impact on flatness of jointed results." David Best DBestWorkshop@... https://www.flickr.com/photos/davidpbest/collections/ https://www.youtube.com/@David_Best
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Hi David,
?
Good to hear from you, and many thanks for the concise approach. I will be very careful not to over-torque those jam nuts and temple bolts. I'm surprised they're not hardened.
?
I will report back when I have the time to devote to this. Might be a few days. Alas, like most hobbyists, work summons me. As the main character in the bleak Italian comedy, "The Working Class Goes to Heaven," says, "work is the curse of the working classes."
?
Greg |
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