I have had many of you ask how to change blades or disassemble on a Rigby cutter for cleaning. Here are the short disassembly instructions for doing so. If you have a Model H – there is only one blade; if you have a Model D, there are two blades. The instructions are the same.
1. Remove the Rigby from the table (if it is clamped down.)
2. Turn it upside down and take off the thumbscrew that you see at the end of the cutter blade(s).
3. Completely loosen the red T-knob at the top side which holds the cutting wheel down against the cutter blade(s) (don’t take it off though.) That will open hole so the cutter blade(s) have room to drop down and be removed.
4. Now pull the handle out (the handle shaft runs through the holes in the cutting blades.) The blades should drop down and come out now.
5. Replace the blade(s) in to the hole (note where the little notches are and line them up) then run the handle back through the center of the blade(s), aligning the notch on the shaft with the notch in the blade(s).
6. Screw on the thumbscrew to hold the handle and blade(s) in place.
7. Clamp the cutter to your table. Now you can crank the T-knob back down to adjust for your fabric thickness.
I wish I had pictures to show you – it would make more sense. If you just do one step at a time, you’ll get it right. If you need to order new blades or cleaning fingers, you’ll find them at Halycon Yarn