I am currently trying to figure out the best way to file / sand / mill code Flat Bottom 82 switch rails and Google is not bringing up very good information! I may be getting too hung up on the accuracy and maths perhaps?
I have gathered up the various planning lengths required for each of the 4 switch sizes that I am using and calculated their angles based on a foot size of 1.86 being reduced to 0.93 (50%) as follows:
AV: PL=28.74mm Planing Angle 1.853°
BV: PL=38.96mm Planing Angle 1.367°
CV: PL=48.74mm Planing Angle 1.093°
DV: PL=58.54mm Planing Angle 0.91°
I have plenty of files to hand
I have a benchtop disc sander (180 grit disc at the moment)
As I am a British Expat based in Calgary, Canada, I have tried a jig from hand laid tracks but it is simply too short.
Now I have taken some rail in an attempt to make a CV blade, marked out 48.74 with a sharpie. What do I do now? Those angles are so small to do accurately by eye.
Wondering if I can find a way to adapt JFS's jig for FB here?
Point Blade Filing Jigs
message ref: 26515