Tools
The shop About SINCE 2011
Diamond burrs, close
DIAMOND BURRSSET OF THREE
R&S · HSS · Ø9.5
The flutes spiral galleries · they carry the chips out
The margin the narrow land that rides the hole wall

We make the tools that make the parts.

Diamond burrs, milling heads and twist drills — ground by hand in Kingston, NY, since 2011.

See the tools
Twist drill · HSS · point [118°] PLUNGE 0% · GROUND HERE

Six steps.

[1]DRAW [2]TURN [3]MILL [4]GRIND [5]MEASURE [6]SHARPEN
A CNC lathe with coolant lines, set up mid job
THE SHOP · TURNINGKINGSTON, NY
The old manual lathe, still in service
THE OLD LATHESTILL IN SERVICE

Everything here gets drawn, machined, and inspected by the two of us, usually with an argument in the middle about whether it needs another thou taken off. The six steps on the ruler above are all of it. The old lathe is slower than the CNC and we keep it anyway, because some jobs want a handwheel and a bit of listening.

The tools.

Grit where it cuts, nowhere else.

Close view of three diamond burrs, coated ends toward the camera
The bath One plating run per set — that’s why the three cut alike
Coating Electroplated diamond grit, bonded to the working end only
Shank Ground steel, sized for common collets · sold as a set of [3]
GRIT, MEASURED. DIAMOND GRIT ON THE BURRS · SIZE DISTRIBUTION, DRAWN FOR THE STUDY 40µm 65µm 90µm 115µm 140µm 165µm 190µm MOST NONE D[107] · THE NOMINAL GRIT MOST OF THE GRIT LIVES HERE DRAWN FOR THE STUDY · THE SHAPE OF A GRADE, NOT A CERTIFICATE SHT·03 · ILLUSTRATIVE
A family of indexable milling heads on the bench

Heads that outlive their spindles.

Indexable inserts, so a worn edge is a part, not a replacement

The seats Milled here, one fixture per body · inserts torqued to 4 Nm

Sharpened by hand.

Two twist drills against a yellow ground
HSS TWIST DRILLS · PAIRSPOINT UP
The corner of the shop where edges get ground
THE SHOP · WHERE EDGES ARE MADEBY EYE
Edge Ground high-speed steel, finished on the wheel by eye
Point anywhere in the drill photo the meter reads the plate
THE DRAWING. ONE TWIST DRILL, DRAWN THE WAY WE DRAW THEM · FIGURES ILLUSTRATIVE SIDE VIEW · SHANK LEFT, POINT RIGHT 1 2 3 4 5 6 7 8 9 A A THE FLUTES · THEY CARRY THE CHIPS OUT PLAIN SHANK · SIZED FOR COMMON CHUCKS POINT GROUND AT [118°] · CHECKED BY EYE [93]mm [57]mm Ø[6.0] SECTION A–A Ø[6.0] · TWO FLUTES THE WEB · THE DRILL’S SPINE THE MARGIN THE GRIND HELIX ANGLE [30°] POINT, INCLUDED [118°] LIP RELIEF, BEHIND THE EDGE [12°] FINISH PASS ON THE WHEEL BY HAND TWIST DRILLS · PAIRS SHT·05A MATERIAL · HIGH-SPEED STEEL SCALE · MM GROUND IN KINGSTON, NY · EST. 2011 R&S TOOL WORKS ILLUSTRATIVE FIGURES
SHOP ARITHMETIC. ONE DRILL, WORKED OUT IN ORDINARY HANDBOOK NUMBERS SPEED CUTTING SPEED, HSS IN MILD STEEL [25]m/min THE DRILL Ø[6.0]mm ITS CIRCUMFERENCE [18.85]mm SPINDLE = 25,000 ÷ 18.85 [1,326]RPM ROUNDED TO THE MACHINE’S PULLEY [1,200]RPM FEED FEED, PER REVOLUTION [0.10]mm PENETRATION = 1,200 × 0.10 [120]mm/min A [20]mm DEEP HOLE, THEREFORE [10]SECONDS TEN SECONDS OF CUTTING HOURS OF GRINDING FIRST WHEN TO SHARPEN CHIPS COME OFF STRAW-COLOURED KEEP CUTTING CHIPS COME OFF BLUE TOO HOT · SLOW DOWN THE DRILL SQUEALS AND RUBS SHARPEN TODAY THE HOLE WANDERS OFF CENTRE THE POINT IS OFF · REGRIND YOU PRESS HARDER THAN YESTERDAY THAT IS THE TELL HOUSE RULE A SHARP TOOL IS CHEAPER THAN A FAST ONE · ALWAYS TWIST DRILLS · PAIRS SHT·05B HANDBOOK ARITHMETIC · WORKED FOR ONE SIZE R&S TOOL WORKS ILLUSTRATIVE FIGURES

Fifty pieces or more, ground to whatever drawing you send us.

The CNC lathe set up for a batch run
Terms Minimum [50] pieces · your print or ours · quoted in [1] day