double region test

[myshop1044]

I would like to cut a double region, first is 8" x 10" .625 deep, the second is 10.5" x 8 5" center on the first and only .125 deep for a glass . I have added both to the file , but it does seems to show both. all so, is there a way to use the cuting bit to cut these region rather than carve them, it would be less time I think.
Feel free to adjust the file for me.
I will carve two of these and join them later.

Myshop

[MCGEE2SKINNER]

HI
I looked at your post but did not see a file.

JIM

[myshop1044]

double region question
lets try this a gain

[Kenm810]

I believe you'll have to make your shallower region (-) negitive, to show up.

[myshop1044]

Myshop1044

[dench]

nope additive

[Kenm810]

looks like (-) Subtractive or (+) Additive will make it show up.

[mifflinlake]

Here is my version using the 1/8" bit for the outer edge of the carve region. This will give you square corners. Might still have to square these up a little by hand. I used the 3/8" bit to cut out the balance of the carve region. This should save some time over two carve regions using the carving bit. Might want to check my math for correct measurements.

[myshop1044]

I like your idea using the 3/8 bit to clear the most of the wood in the region.
could you send me e_mail on how you determine the distance btwn lines in the region. did you move less that 3/8" on each line and how does the end of the 3/8" bit finish out at the end of the lihe cut against the rect. 1/8" cut.
lets talk more please.
Maybe I could get a program written to claculate the different distancies needed on the different strokes based on a 3/8" o.d. bit on different rectangle of selected sizes.

Myshop

[DocWheeler]

myshop1044,

Having done this several times, I found a couple of things of interest. On my machine, the spindle/bit is not perpendicular to the belts in the X direction which leaves the bottom uneven.
And as far as how much to cut out each time - it depends upon which way the bit is traveling. If it is going in the direction where it lifts the grain, it cuts deeper than the other way where it tends to climb away from the board.
I think you would set the bit centers at about .36" to have complete removal.

For what its worth.