G-Force CNC User Forum

I am running a 4x8 MM and would like see pictures of the set ups other are using.

I would like to make something that can be attached to the table and am thinking I will have to cut a section of table out and am reluctant to do so. Any ideas??

Al

Does the Mechmate allow the spindle to reach past the end of the table?
What about the opposite end?

Not on either end but will modify to suit

al

Hi Alan,
I also run a Mechmate #109

its 4 by 8 and I made a jig to go on the end of the table, works fine not pretty , I'm down my workshop tomorrow, I'll
take a couple of photos for you.
Cheers
Andrew

Hi,

Solomani here. Jointcam is just the program I had been looking for to do outstanding and easy setups for joints on my machine.

This is what I set up for as my fixture. I drilled a grid of 3/8ths holes on a grid in two panels of MDF. In some of the holes are threaded inserts for attachments. others are left blank for positioning pins. This setup also allows me to set pins and do tenons on an angle.

Best regards,
John

Here is the picture

Do you find the holes in the MDF deforming from clamping pressure?

Hi, I use these: instead of these: Most of my clamping force is through the board and to the other side of the mdf using the first type. I did get pullout using the other two if a fixture is used very much. I have not had issues with clamping against the 3/8ths dowels but then again I am not using them for work holding just for positioning so the force against them is relatively light.

i relieve the back of the mdf fixture board to allow the inserts to sit below the plane of the mdf so I am not resting the board on the inserts. one downside of using these threaded inserts is that they cannot be used for positioning and they also don't allow me to use the same hole for hold down and for positioning.

best regards,
solomani
John

I thought you were clamping against the dowels.

My bad. I agree with you that the force needed to keep the work piece in place against the pins without any other hold-down would definitely deform the MDF. Short of going to metal for a fixture plate have you seen other ideas or materials that work and hold precision over time?

-John

I use MDF fences bolted to the table.