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I am sorry that I have not replied earlier. The carving depth is determined solely by the touch to the surface. If the machine is having trouble bobbing down the hole, I would check that the black...

Go with the 3/8. Bigger is ok as long as you do not break through the side.

The machine does the board thickness routine when the carving/cutting is more than 1/2" deep. It is then that you have to jog to line up a touch hole. After the bob down the hole, the machine will...

The machine is supposed to bob the bit into the one of the holes in the side of the carrier; not stall into the top of the side. If you use the blocks, the machine will behave as it would with a...

Where you put the board in the UCB is mostly up to you. If you have a spot where you would like the bit to touch you can put that spot adjacent to one of the touch holes in the side. Otherwise, I...

Glad to see you are using it! For me, it is standard procedure. I very rarely carve down on the belts.

The holes in the top of the right side and the blocks bolted to the sides are all so that the machine will measure the board as if the board was down on the belts. The holes are for the bit to bob...

The roller switch must first click as the roller rolls off the board end. Then the machine then uses the board sensor to locate the end of the board.

You can do two sided carving as you would with the board on the belts. As Dale said, however, it would be the easiest to just do it as two separate projects.

If the machine touches at the brass roller and cannot make the touch at the sliding plate you get the Retry or Cancel. (The sliding plate touch is higher than the brass roller touch and so the...

Yes, it bobs as part of the thickness determination. The bob at the brass roller is to get an idea as to the depth to expect for the sliding plate when it bobs for it. The difference between the...

The optical sensor finds the edges of the board as well as the ends of the board. (That is why the carrier has the black sections.)

The tapered parts of the blocks go down. The pins are below the...

The touch hole is for the bit to drop into. This is to fool the machine into thinking the bit is bobbing beside the board. The bit will not actually touch anything in the hole. After the bob into the...

Are you talking about the UCB project itself or a project you used the UCB to hold?

If it is the UCB project itself, the tabs cutting out would have to do with board thickness problems. Make sure...

Look closely at the sides and note that the front end is the longer end. (The front is longer so the Carrier front stays under the roller even when measuring the board.)

In the Designer mpc, the...

No, you have to make it yourself. The machine will cut out all the wooden parts. You do have to also buy some hardware.

No idea. The mpc does not have cuts like that. Is the machine trying to cut the board to length??

The only thing that I think could be a problem is the bit bob on the squaring plate side. You might have to cut a small slot for the bit to miss the carrier.

I cannot remember any reason why you cannot use 3/4". I think others have.

Sure you can paint the carrier black. If the board is short, you have to place the board on the carrier so that a touch hole is near by. One cannot jog out of the area where the machine determines...

Sorry, I thought you were taking about measuring the width of the board. Forget the tape. (The length of the carrier cannot be measured as it has no ends.)

If the machine is not finding the ends...

Maybe the black is not black enough. (It has to black to IR.) To experiment, try two pieces of black electrical tape.

I would think that the black sections of the carrier are not exactly under the board sensor. The board sensor is only 1.5" behind the bit and right under the y carriage. Maybe you have to move the...

The program has no idea where the sliding plate is. The sliding plate is so far down below that the bit can never find it. I say to put the sliding plate up against the inside of the left side of the...

I wonder why a few people have this problem. Could it be that your head pressure is too large?