Hi Shopguy
The bit below works great for picture frames .
But I not to sure what you mean by saying "leaving an irregular outer border"
They make many bits that will do this job.
Picture Frame Rabbet Bits
2 flute, carbide tipped bits with totally enclosed ball bearings.
Designed for making custom picture frames or mirrors. The double stepped rabbet will cut either a 1/8" x 3/8" or 1/4" x 3/8" rabbet for your glass or mirror, and an additional 3/8" x 3/8" rabbet for your artwork and backing board. Use for 1” or larger stock.
http://www.mlcswoodworking.com/shopsite_sc/store/html/smarthtml/pages/bt_pictr.html#pfram_rab_anchor
Use this one to plunge in and cut the frame out
http://www.mlcswoodworking.com/shop...rthtml/pages/bt_solid.html#spiral_down_anchor
You can use this type on bit to plunge on the out side of the frame and then use the carb. downcut with a brass guiide to to remove the outside of the frame.
Faux Raised Panel Bits
http://www.mlcswoodworking.com/shopsite_sc/store/html/smarthtml/pages/bt_groov.html
Bj
The bit below works great for picture frames .
But I not to sure what you mean by saying "leaving an irregular outer border"
They make many bits that will do this job.
Picture Frame Rabbet Bits
2 flute, carbide tipped bits with totally enclosed ball bearings.
Designed for making custom picture frames or mirrors. The double stepped rabbet will cut either a 1/8" x 3/8" or 1/4" x 3/8" rabbet for your glass or mirror, and an additional 3/8" x 3/8" rabbet for your artwork and backing board. Use for 1” or larger stock.
http://www.mlcswoodworking.com/shopsite_sc/store/html/smarthtml/pages/bt_pictr.html#pfram_rab_anchor
Use this one to plunge in and cut the frame out
http://www.mlcswoodworking.com/shop...rthtml/pages/bt_solid.html#spiral_down_anchor
You can use this type on bit to plunge on the out side of the frame and then use the carb. downcut with a brass guiide to to remove the outside of the frame.
Faux Raised Panel Bits
http://www.mlcswoodworking.com/shopsite_sc/store/html/smarthtml/pages/bt_groov.html
Bj
