here is how I make a celtic knot the easy way on my mitre saw. You can probably be more acurate on a table saw with a jig but I have not tried it on one yet.
1st step I measure the kerf of my saw blade. I want my inserted piece to be the same size as the saw kerf. Makes it easier for the glue up
Next I put a stop block and cut up the insert peices. I did make sure the blade was exactly 90deg with my square.
Once I cut out all 4 insert pieces it is time to cut up pen blank to do the glue up. I move mitre saw over to 30 deg to make the first cut. To complete the 2nd cut I move the saw over to 30 deg on the other side
Once the first piece is glued in I draw the lines you see here. I use my square to make sure lines are perfectly in line with the cut out part. It seems the intersecting piece is there part where things can go south so it is important the 2nd cut is perfect or the knot will not line up right.
here is the 2nd piece cut and glued in. For this demo I used thin ca to glue together. The ones I actually turn I go with good ole yellow style but ca should work if you use thick/med with accelorator.
In this pic I am just checking to make sure it is all lined up right. Notice the change in glue type.
here is the completed glue up.
once you have gone this far the next step is to turn the blank to the uppr side and make the final "x" In this pic you see I still carry over my marks. It is really easy to mess up here so I double/tripple check it to make sure I am cutting in the right place
here is the glue up of the 2nd x
and now we are just about ready to turn
notice the blank is not drilled perfectly in the center. My knot will be screwed up if not drilled
in the exact center spot.
this pic is real close but slightly off. It is easy to screw these up. I would recommend trying crap wood first till you feel comfortable with it.
Last edited by maverick; 05-21-2011 at 4:19 am.