Est. 1998 — 27 years of woodworking knowledge
Miller's Patent BLADE-FEST
Jim Reed @ Tallahassee
>Cut out the blanks a few weeks ago. Spent yesterday working out the tooling. Today was the day, but I had to take time out to watch my alma mater WIN THE ACC TOURNEY!!! Go Tar Heels! ! !
Oh, by the way, here is the first batch of blades ready for heat treating.
Nice work Jim but...
Rob Brophy...lost in Niagara
>...what's ACC and what is a Tar Heel?
Is the blade bed large enough to support those wide blades? Or is there a secondary support?
Rob
Gimmie, gimmie!
Scott Burr in Ben Lomond CA
>Oh, Oh, I must have a set! I'll email you!
Question on geometry
Ellis Walentine
>Jim, Paul's original blade came without a side grind, but I felt it needed to be there so I ground the sides back about .010" or so. Have you done something similar on these blades?
Cheers,
Ellis
Relief angle
jim reed @ tallahassee
>In short, I have not planned to make relief angles, but could on request. I have seen the thick 1/4" Miller blades with relief angles and have seen the relief angles even on #48 cutters. The theory is that flat sides cause friction and slight relief angles prevent that. I have tested both types in my shop and have never found the angle to help on blades that are 1/8" or less in thickness. I have also found no difference on my thicker blade three #41s, although that is a limited population. My experience is that metal planes do not require relief angles--I think they are holdovers from woodie days. Because of the variability of the handmade product, wooden plow planes with a skate which require a blade groove could be hard to match. If the skate/groove interface is too loose, then you lose the benefit of the skate to prevent lateral movement. If the skate/groove interface is too fat, then the blade will rock from side to side and will sit slightly askew. This is where a relief angle would help. Wooden plows which use blade skates and thick blades are probably where this practice originated. Just my theory.