|Project by kiefer||posted 07-10-2012 06:24 PM||13286 views||34 times favorited||34 comments|
This is my band saw spiral cutting jig which is the first application of the rubber and wood gears I posted a while ago .
The jig is a prototype to prove out the principle of this mechanism and so far it has produced several pieces which quickly where put to use ( see pic 6 )
The jig consists of a rack which is fastened to the edge of the jig and a gear which simply gets fastened to the work piece and as the work piece is rotated it decreases the radius at a constant rate .
The radius can be varied by using different gear sizes .
The gear is held onto the rack by the opposing edge of the rack and the edge is replaceable to accommodate different gear sizes ( pic 2 ) shows the spacer and and gears .
I will build a more substantial jig based on what I have learned from this and post it when done .
There is a video that my wife made and I will add it when I figure out how to post it .
The application for this are interesting and will open a new avenue for me .