Disc Sander for scarf joints leaves radius

[rcplaneguy]

I think that's where I am going to end up. At this point I am just curious if this can be done on a disc sander as shown in my canoe book.

Of course it can. Just be sure the sanding surface (disk) is not flexing, and the work piece is not flexing. The belt sander will be more efficient due to uniform speed, uniform direction, larger surface area of abrasive.

[beatnik]

Here's two guy's using different methods. Yo could combine the two to stabilize your work piece.

http://www.michneboat.com/Working%20Wit ... Strips.htm



http://www.canoe-suwannee.com/build_you ... canoe2.htm

[algale]

Here's two guy's using different methods. Yo could combine the two to stabilize your work piece.

http://www.michneboat.com/Working%20With%20Short%20Strips.htm



http://www.canoe-suwannee.com/build_your_own_cedar_strip_canoe2.htm

Yep. That's what I was doing.

[skou]

Your method "should" work.

In the original ('53 10ER) PTWFE, Robert showed a way to joint using the same method. Unless you have some flex, (table, disc, wood, way tubes) your method should work. Of course, he was going from back to front, in that method.

I'm thinking, putting the work piece(s) stationary, and advancing the disc sander into the work should work OK. A spinning flat disc should make a flat surface.

You, (since you're using a Shopsmith) have that advantage. You want to sand on the falling side of the disc, not the rising side, and below the center of the disc.

If it were me, and having my extensive collection of antique Mark 10 parts, I'd just set one of my rip fences to the required angle, and sand to my heart's desire. (Can a Mark Series rip fence be adjusted out of parallel? My mark 10 stuff can.) Worst case scenario, I don't clamp the front end down with the Shopsmith rip fence clamp, but use a C clamp on both ends.

steve

[dusty]

Set the fence to 7.1° off the face of the disk.:eek:

[JPG]

7.18°:D

Yes any but a 520* can be offset that much.(*I think!:rolleyes:)

*But a 520 can be shimmed.

[videobear]

You might also try sanding both pieces at once to achieve an identical angle.