Gouging problem

[Bob Neff]

56921Carving tool gouges the carving in the same area every time.
Any ideas on how to fix the problem?

[AskBud]

56921Carving tool gouges the carving in the same area every time.
Any ideas on how to fix the problem?We need more Info! Attaching your MPC will help (with or wothout the dog pattern).
What size is your actual board?
Was/is it solid as you loaded it in to the machine, or was it pre-cut with the meshing ears prior the starting?
AskBud?

[Bob Neff]

The board size is 4 X 4" mounted on a sled 14 inches long and 8 inches wide. The gouging happens on both full size boards and mesh ears.

[AskBud]

The board size is 4 X 4" mounted on a sled 14 inches long and 8 inches wide. The gouging happens on both full size boards and mesh ears.We still need to see the MPC, as before.
Have you tried a flat 14(or 20) x 8 board, in order to prove the sled is not part of the problem.
AskBud

[Bob Neff]

I will try a flat board tomorrow
What is a MPC?

[AskBud]

I will try a flat board tomorrow
What is a MPC?The MPC is the actual design/project that you are attempting to carve.
AskBud

[Bob Neff]

The pattern is a lab bust from Plantations Designs from CW pattern dept
Other patterns have the same problem
I will run a flat board on Monday and let you know the results
Thanks for your help

[lynnfrwd]

Doesn't sound like a pattern issue then.


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[Digitalwoodshop]

Measure from the Gouge 3.5 inches and you will find what is causing this... The Board is normally held FLAT to the sand paper belts by TWO rollers... IF you design the project and have a Height Change in your SLED or the board HITS a IN FEED or OUT FEED roller that is adjusted TOO High then the Board will move UP toward the BIT and hence make a GOUGE in the board.... I am betting a too high out feed roller table.

ALSO the 7 inch rule of wood comes into play here... IF you design the project and use wood that is TOOOOOOOOOOO Short... Then one end comes out from under the Roller and moves UP 3.5 inches from the Bit marking a LINE.....

But my money is on a VERY HIGH Out feed table and the board is hitting the board and lifting the board into the BIT....

Be sure to find and read TIPS and TRICKS on the LHR site.... Lots of PILOT Error stuff.... As in Crashing the Airplane before learning to fly....

Good Luck,

AL

[Bob Neff]

My in and outfeed rollers are set 1/32" lower than belt rollers, rechecked with a straightedge today
There is no height change during the carve. The position of the sled is within 1/2" of being centered in the machine when the gouge started.
7 inch rule should not come into play as the carving board is 5 3/4" square and the length of the sled is 13.5" long and 9.75 wide.
If you enlarge the carving of the lab on my first Blog Entry, it looks to me that the tool gouged DOWN about 1/8" deep and 1/8" wide.

Having said all of the above, I ran a carving of the lab this morning on a 3/4" board, 30" X 7" and it carved fine.
Two unusal things happend during the carve. I got a power fluctuation message, My machine has a dedicated 30 amp power source just for the machine and my dust collector.
After the machine went through its setup procedure and the key pad said 'Carving', there was about a 15-20 second delay before it started to carve.

[DickB]

Having said all of the above, I ran a carving of the lab this morning on a 3/4" board, 30" X 7" and it carved fine.
That would point to a sled problem. Can you post a picture of your sled with the blank in place?

[AskBud]

That would point to a sled problem. Can you post a picture of your sled with the blank in place?If you are still reluctant to attach your MPC, Tell us what the dimensions of you sled and the test "flat board" compare to your MPC measurements.
AskBud

[cestout]

If you are still using a QC, check for a loose bit. Also check for a non rolling roller on the Z truck. A catching roller can cause this kind of problem. Put a couple of paper shopping bags over your traction belts, remove the sweepers (little plastic fenders) and squirt some WD40 between the roller and the truck one side at a time and run the truck up and down several times. You can do this for the Y truck also. Put your fingers on the rollers as you move the trucks to be sure the rollers are rolling. With the power off, both trucks should move very easily and smoothly.
Clint

[Old Salt]

I have had this problem and found dust under black cover of motor.

[Bob Neff]

56962

The sled is 13 3/8" long X 9 /3/4" wide X 1" thick
The blank is 4 3/4" X 4 3/4" X 1/2" thick
The test flat board is 30x7x3/4

Old Salt, I took the the plastic back cover off the motor and cleaned it, did not help
I will check the Z truck tomorrow

Ask Bud, I am not reluctant to download the MPC, I can't get it to download

[AskBud]

56962

The sled is 13 3/8" long X 9 /3/4" wide X 1" thick
The blank is 4 3/4" X 4 3/4" X 1/2" thick
The test flat board is 30x7x3/4

Old Salt, I took the the plastic back cover off the motor and cleaned it, did not help
I will check the Z truck tomorrow

Ask Bud, I am not reluctant to download the MPC, I can't get it to downloadI do not think it is a truck problem!
You have not stated the actual size of yor MPC (design Board).

To attach a MPC you use the "manage attachments" just like a photo.

[Bob Neff]

4 3/4 x 4 3/4 x 1/2

[Bob Neff]

When I try to attach the MPC, all I get is a question mark in the box

[AskBud]

4 3/4 x 4 3/4 x 1/2That design board (MPC) size will abort, see attached.56964

I'll also send you a private message should you need more help attaching things.
AskBud

[Bob Neff]

I sized the design board on designer 6x6 and did not get the disclaimer because I thought it would de OK as the machine measures the size of the sled
So, the actual size of the MPC on designer was 6X6 and the actual piece size is 4 3/4 X 4 3/4

[DickB]

56962

The sled is 13 3/8" long X 9 /3/4" wide X 1" thick
The blank is 4 3/4" X 4 3/4" X 1/2" thick
The test flat board is 30x7x3/4

What is holding the blank in place? Since it is 1/4" shorter than the sled, do you have anything keeping the blank from rising up?

[AskBud]

What is holding the blank in place? Since it is 1/4" shorter than the sled, do you have anything keeping the blank from rising up?We've talked! He is using blanks which are not being held down on his sled. The short length of his blanks are rising (being pulled up) between the sled ends, as each end of the blank exits the hold-down rollers. He is going to re-engineer a better method to best hold the in place.
AskBud

[DickB]

If you re-read the thread, lots of speculation. It helps to the facts and pictures.

[Digitalwoodshop]

ASK BUD Saves the DAY... And some Wood in the process.... The Blank is LIFTING inside the machine... Masking Tape would fix that.... In the 7 inches between rollers we have a small square of wood that is left to flop around.... Hence... Gouging.....

Good Job Ask Bud !!!!

AL

[Bob Neff]

Thanks to all who responded to the gouging problem
And a special thanks to Ask Bud who not only solved the problem, he also had a suggestion on how to correct it.
I countersunk small wood screws on the underside of the sled and it worked just fine.
In my case the small hole will be on the inside of the box and no problem.