Scribing to make a curvy cut

The challenge is to spape a piece of wood to cover the hole around the cedar post.

The challenge is to shape a piece of wood to cover the hole around the cedar post.

If you have to make irregular shaped things one way to do it is to scribe the  curve on to your board.  There are specialized tools that look like a compass that will do it but I made a quick tool to get this little job done.

Scriber made from a pencil and a piece of wire.

Scriber made from a pencil and a piece of wire.

The basic idea is this.  You look at the lumpy post as just a curvy line and you just need to copy that line but make the copy move over to your piece you are going to cut.

the piece to cut and the spacers to keep the board strait.

the piece to cut and the spacers to keep the board strait.

The  little blocks hold the piece strait and the pencil and the wire have to be adjusted so that the distance between the end of the wire and the pencil lead is the same as the width of the blocks.  I twisted the wire more or less around the pencil to adjust that length.  To use the scriber just use the pencil on the block to be cut and point the copper wire perpendicular to the block and towards the post.  The trick here is to keep the wire parpendicular and move the  pencil down the board while the wire bumps along the post.  The direction it moves is not important going forward and backwards is not a problem, messing up and  drawing a second line is no big deal just figure out which line is right.   I used a jig saw to cut the piece and nail it up.

One small idea for the mental tool box.  Perhaps it will inspire other soultions in the future.  As always leave a comment.

 

finished piece

finished piece

 

 

 

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