Increasing Z?

[scottp55]

Ed, I just looked at it and it would gain me the entire thickness of the collet nut.Thanks scott

[Max Girouard]

Hi Scott,

Here is a photo of one of my jigs I use to carve mandola tops. The tops are not very thick but this is the same principle I use to carve the necks on our mandolins which are carved from stock that is two inches thick. I make the vacuum fixture out of phenolic and have a similar zero ring that I install in the phenolic. The phenolic is .25 thick, and the vacuum gasket channel is cut in about .187. I drilled a hole in the center of the vacuum grid lines and have the hose running out through one of the aluminum slots rather than out front as shown in the pictured jig. I recently cut some blocks that were 2.125 thick, using an extra long .25 end mill. My strategy there was not to use a vacuum jig but clamp it down directly to the aluminum t tracks with some clamps I purchased from another member here on the forum. The wood was actually 2.2, and cut the profiles to 2.125 thick leaving the blocks in the board. When done with the profile cuts I took it off the bot and flipped it upside down and passed it through the thickness sander to free up the blocks. They came out nice and clean. Eventually I plan on cutting necks that are about 3 inches thick. For that I'll slice the model and cut the first part with a stub end mill, then run the second part with a longer mill. Let me know if that helps, and I can get a better picture of my neck jig tomorrow.

[scottp55]

Thanks Max, like the zero-ring. thanks for the image and info, very helpful. You have pics of finished work? scott Never mind I'll check.

[rawhide]

hi max,your table design is great.what type of pump do you use?

[Max Girouard]

Thanks! I use one of these.............

http://www.veneersupplies.com/produc...n-Rebuilt.html

I didn't seal the mdf and I'm still pulling around -20 bar on mandola and mandolin sized plates made of spruce and maple.

[Hoytbasses]

Hi Max:

do you think that vacuum pump would have any problem with an acoustic archtop top/back plate?

thanks

Karl

[Max Girouard]

I think it would no problem. I would however seal the mdf or other substrate if it is porous. Mandolins are so small that I didn't need to, but for a full size archtop guitar I would.

[Hoytbasses]

I think it would no problem. I would however seal the mdf or other substrate if it is porous. Mandolins are so small that I didn't need to, but for a full size archtop guitar I would.

Thanks...... I'm not there yet... but inching closer......

kfh