Flipping the material

[Bob Savage]

Bob,

I have a simple plywood jig that I made to machine door signs on both sides. It isn't pretty but it is accurate and can be setup on the table in just a couple of minutes.

I machined the edge profile of the door sign in plywood, cut two notches on the top of the jig that I can use a quick grip clamp to close a kerf cut I made at the top of the jig.

I will take a picture tomorrow for you, the jig is on the ShopBot at CNU.
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By the way, I'm particularly looking forward to seeing this because I'll soon be moving on to cutting birch plywood for guitar extension cabs and head shells/cabs, and need to do dado's on one side and roundovers on the other, so I have another material flipping project ahead of me. I need to make this process simpler!

[Keith Outten]

Bob,

Sorry but I got swamped today and didn't have the chance to take the pictures. I will take them tomorrow morning and post them during lunch.
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[Bob Savage]

No problem Keith, I understand.

For these tap handles, I may end up doing two sides and joining them to make it easier, however, I want to conquer this double sided thing for when I start doing the speaker cabinets.

[Keith Outten]

Bob,


Here is the picture of the jig I use frequently for door signs. Note the cross I machined in the center of the blank, I use my laser pointer in the router collet to set the orgin center of the jig.

The plywood is mounted to a piece of Corian with three screws, this way it can flex when I tighten the quick clamp. The bottom edge of the jig rests on a machined edge at X0. When I machine my spoilboard I leave the edge at X0 which gives me a kind of fence edge. The MDF sheet is 49" wide so I hang the extra inch over the plywood base.

Before anyone asks how I remove the plaques after they are machined I use a vacuum clamp, the ones they use to lift and handle glass.

[Keith Outten]

Bob,

Here is a picure of a full sheet of Corian sign blanks being machined. I machine the keyholes and window openings on the back side of the sheet, then flip it over and cut a contour detail that follows the plaque edge. The last step is to cut the plaques out.

I have to layout the rows of sign blanks on the drawing centered in the X direction so everything lines up perfectly when I flip the sheet over.

[Bryan Cowan]

I use my laser pointer in the router collet to set the orgin center of the jig.

Yup, I want one of those! Was that a DIY kind of thing, Keith?

[Keith Outten]

Bryan,

The laser pointer was something that Steve Knight found on the Net and shared with us here at The Creek awhile back. Check out this link:
http://www.lasercenteredgefinder.com/main.html

Its a real handy tool for a CNC router, drill press or milling machine.
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[Bob Savage]

Bryan,

The laser pointer was something that Steve Knight found on the Net and shared with us here at The Creek awhile back. Check out this link:
http://www.lasercenteredgefinder.com/main.html

Its a real handy tool for a CNC router, drill press or milling machine.
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I'm sold, and just bought one.