Machining

English-style Dovetailed Steel Infill Smoothing Plane

A13 Type - Jim Yehle - Salt Lake City - Jan 2003

These milling maching programs use the CNC language of the Anilam 1100 three-axis control. Its "conversational" program files have a .m extension. The mapping from this language to G-codes is generally obvious, so a translation to G-codes should be easy, if that's what you need.

I caution those who would use these programs to review all aspects of the machining before proceeding. CNC programs such as these cannot take into account all aspects of making a part. Important variables include fixturing the part to clear all tool paths, and cutting speeds and feeds. I tried to set the feed rates so that running at 100% won't burn anything up. (This control has a 0-120% feedrate knob which can be adjusted during the run, and I'm constantly fiddling with it.) In any case, it's wise to make test runs with the Z axis set high enough to clear everything, then test parts in wood, especially of the dovetails for fit-testing. You will note that I needed to tighten up the dovetails by five or six thousandths before cutting the parts.

Parts for Body

Part Portion CNC prog Tool Drawing (PDF)
Sole left edge pins sole-l1.m
(HTML or text)
3/8" end mill jy-a13-side
a13body-mach
Sole left edge pins sole-l2.m *
(HTML or text)
1/2" 60° dovetail † jy-a13-side
a13body-mach
Sole right edge pins sole-r1.m
(HTML or text)
3/8" end mill jy-a13-side
a13body-mach
Sole right edge pins sole-r2.m *
(HTML or text)
1/2" 60° dovetail † jy-a13-side
a13body-mach
Each Side bottom (dovetails) sidebot1.m
(HTML or text)
1/2" end mill jy-a13-side
a13body-mach
Each Side bottom (dovetails) sidebot2.m
(HTML or text)
1/2" 60° dovetail † jy-a13-side
a13body-mach
Left side top profile Y13LSIDE.M 1/2" end mill jy-a13-side
a13body-mach
Left side top chamfer, rear LSIDE-CR.M 3/4" 45° chamfer mill ‡ jy-a13-side
Left side top chamfer, front LSIDE-CF.M 3/4" 45° chamfer mill ‡ jy-a13-side
a13body-mach
Left side mid-top chamfer (none) 15° chamfer mill jy-a13-side
Right side top profile Y13RSIDE.M 1/2" end mill jy-a13-side
a13body-mach
Right side top chamfer, rear RSIDE-CR.M 3/4" 45° chamfer mill ‡ jy-a13-side
a13body-mach
Right side top chamfer, front RSIDE-CF.M 3/4" 45° chamfer mill ‡ jy-a13-side
Right side mid-top chamfer (none) 15° chamfer mill jy-a13-side
† 1/2" dovetail has a diameter of 1/2" at the tip, i.e. its largest diameter
‡ 3/4" chamfer mill has that diam. at the top, smaller diam. at the tip
* These contain a math error which lead to creation of secondary dovetail bevels of 12.1° rather than 15° as designed.

Programs for Dovetail Test

Only the first few cuts, starting from the front, which allows the use of small scraps for testing.
PartPortionCNC progTool
Soleleft edge pins SOL-L1.M3/8" end mill
Soleleft edge pins SOL-L2.M * 1/2" 60° dovetail
Soleright edge pins SOL-R1.M 3/8" end mill
Soleright edge pins SOL-R2.M * 1/2" 60° dovetail
Each Sidebottom (dovetails) SIDBOT1.M 1/2" end mill
Each Sidebottom (dovetails) SIDBOT2.M 1/2" 60° dovetail
* These contain a math error which lead to creation of secondary dovetail bevels of 12.1° rather than 15° as designed.

Lever Cap

PartPortionCNC progToolDrawing (PDF)
Lever Capback (top) profile LEVCAP-T.M
(HTML or text)
1/2" end mill levercap
Lever Captop, front curve LEVCAP-R.M
(HTML or text)
1/2" end mill levercap
Lever Captop, front curve LEVCAP-L.M
(HTML or text)
1/2" end mill levercap
Lever Capbottom, lower relief LEVCAP-B.M
(HTML or text)
1/2" ball end mill levercap
Lever Capbottom, upper hollow LEVCAP-H.M
(HTML or text)
3/8" corner-radius mill levercap
Note: positions for LEVCAP-B.M were generated by program levcap-relief.prl

Adjuster

PartPortionCNC progTool Ref. dwg. (PDF)
Traveler harnessprofile, stem end TRAVHAR1.M 1/4" centercutting end mill jy-adjuster-parts
jy-adj-travhar-mach
Traveler harnessprofile, traveler end TRAVHAR2.M 1/4" centercutting end mill jy-adjuster-parts
jy-adj-travhar-mach
Traveler harnessbore for stem TRAVHAR3.M .185 drill, 3/16" chucking reamer,
1/4" centercutting end mill
jy-adjuster-parts
Note: stem, knob, swivel, traveler, and iron-screw are made on lathe--no CNC program available.

Infill

PartPortionCNC progToolRef. dwg. (PDF)
Closed Toteadjuster mortise ADJ-MORT.M 3/8" centercutting end mill jy-a13-infill-dim
Closed Toteadjuster stem slot STEMSLOT.M 3/8" ball end mill jy-a13-infill-dim

Not yet linked to tables:

I probably won't recommend these (and why):

Note: PDF prints may not be as accurate as the original CAD files, which you can download.