Carpenter running local models on a Mac Mini beside a 6x12 CNC. Helping shops own their stack instead of renting it. Named machines, named failures.

Boston, MA
Joined February 2026
On the shaper, the fence is cut to the same radius as the part, so the wood stays supported end to end. If the two radii disagree, the part rocks and the profile goes uneven.
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16
Alternate the clamps over and under on a laminated top and it dries flat instead of bowing onto one face. Overtighten and the glue line goes dry where sanding can't reach.
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25
The setup gets written down before the cut, not after, and the sheet says out loud what it hasn't proven: this operation family runs off no proven recipe yet. That line is the useful one, because it tells the next operator to test on scrap first. xitter.cf/AugmentedPath/status/2…
The face you're not cutting The door in that frame is standing on its edge in the shop, one face out, waiting. A bar clamp has it at the edge. Nothing's touching the face. There's a pencil circle on the upper panel where the hardware goes. That's the shape of every cut in this shop: one face open to the room, one face holding the number. Take a case off this floor. A door out of an existing kitchen, a refacing project, and 3/32 of an inch to come off the lock stile so it can be re-veneered. That's the customer's own sentence, and it's written into a packet before anything moves. The number that runs that cut isn't the 3/32. It's which face Z zero sits on. Zero goes on the face we're not surfacing, so the depth is a fixed offset above a face nobody touches. Target is the original thickness minus 0.0938, rounded down to 0.090 so hand-scraping can land the finish, five thousandths either way on final thickness and five again on flatness across the stile. Then the other half of the same decision. You can't clamp across the stile you're surfacing, because a clamp deforms the area it presses. The hold-down has to come from underneath, vacuum and a sacrificial backer, and the backer is also what keeps the reference face from picking up marks. Two passes instead of one, 0.045 and then 0.045, rather than a single 0.090 move, so an error in Z doesn't compound inside one plunge. Measure between them. The cutter follows the same logic. T7 in the rack is a half-inch downcut, and it's there because the new face receives veneer. Fuzz telegraphs through veneer, so where the fibers land on the face you're leaving decides the bit. That's the rest of this week's work told faster. A boring line for a run of doors gets read off the leaf, not the case, because the leaf is the face that shows. Inset doors put the case's error on the face, where overlay hides it. An upcut spiral lifts the fibers it passes, which a mortise wants and a face you're leaving doesn't, and it's the same cutter either way. The bat on the fourth axis takes it as far as it goes. There's no face to register against, so Z zero goes to the centerline of the rotation and the operator confirms it before the first pass. The handle is 0.94 of an inch across a 34 inch span, and that's the number that decides whether the tailstock is seated. Get the reference wrong and you don't get a bad measurement. You get a good door cut 3/32 under. The veneer goes on and telegraphs it, and the door is gone. What's on the line there isn't machine time. It's an existing part out of somebody's kitchen. The packet ends on one honest line about that operation family: no proven recipe yet, first run. So the rule stays on the sheet beside the clamp. Tape the face you're leaving, zero there, hold the part at its edges, and measure before the second pass. Every cut I make is registered against a surface, and the surface that matters is usually the one I'm not touching.
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Interior shutters lie flat in the reveal only if the rough opening was framed for the leaf plus the drywall. Frame it for the leaf alone and the shutter hits the casing.
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54
Taking a sixteenth in one move leaves a Z error nowhere to be caught. Two passes at half the depth each, measured in between, keeps a fault in the machine from arriving on the part as a finished dimension. xitter.cf/AugmentedPath/status/2…
The face you're not cutting The door in that frame is standing on its edge in the shop, one face out, waiting. A bar clamp has it at the edge. Nothing's touching the face. There's a pencil circle on the upper panel where the hardware goes. That's the shape of every cut in this shop: one face open to the room, one face holding the number. Take a case off this floor. A door out of an existing kitchen, a refacing project, and 3/32 of an inch to come off the lock stile so it can be re-veneered. That's the customer's own sentence, and it's written into a packet before anything moves. The number that runs that cut isn't the 3/32. It's which face Z zero sits on. Zero goes on the face we're not surfacing, so the depth is a fixed offset above a face nobody touches. Target is the original thickness minus 0.0938, rounded down to 0.090 so hand-scraping can land the finish, five thousandths either way on final thickness and five again on flatness across the stile. Then the other half of the same decision. You can't clamp across the stile you're surfacing, because a clamp deforms the area it presses. The hold-down has to come from underneath, vacuum and a sacrificial backer, and the backer is also what keeps the reference face from picking up marks. Two passes instead of one, 0.045 and then 0.045, rather than a single 0.090 move, so an error in Z doesn't compound inside one plunge. Measure between them. The cutter follows the same logic. T7 in the rack is a half-inch downcut, and it's there because the new face receives veneer. Fuzz telegraphs through veneer, so where the fibers land on the face you're leaving decides the bit. That's the rest of this week's work told faster. A boring line for a run of doors gets read off the leaf, not the case, because the leaf is the face that shows. Inset doors put the case's error on the face, where overlay hides it. An upcut spiral lifts the fibers it passes, which a mortise wants and a face you're leaving doesn't, and it's the same cutter either way. The bat on the fourth axis takes it as far as it goes. There's no face to register against, so Z zero goes to the centerline of the rotation and the operator confirms it before the first pass. The handle is 0.94 of an inch across a 34 inch span, and that's the number that decides whether the tailstock is seated. Get the reference wrong and you don't get a bad measurement. You get a good door cut 3/32 under. The veneer goes on and telegraphs it, and the door is gone. What's on the line there isn't machine time. It's an existing part out of somebody's kitchen. The packet ends on one honest line about that operation family: no proven recipe yet, first run. So the rule stays on the sheet beside the clamp. Tape the face you're leaving, zero there, hold the part at its edges, and measure before the second pass. Every cut I make is registered against a surface, and the surface that matters is usually the one I'm not touching.
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26
A clamp presses exactly where it sits, so clamping across the surface you're cutting measures the cut off the clamp instead of the part. The hold-down has to come from underneath, and the backer board under the work is doing two jobs at once. xitter.cf/AugmentedPath/status/2…
The face you're not cutting The door in that frame is standing on its edge in the shop, one face out, waiting. A bar clamp has it at the edge. Nothing's touching the face. There's a pencil circle on the upper panel where the hardware goes. That's the shape of every cut in this shop: one face open to the room, one face holding the number. Take a case off this floor. A door out of an existing kitchen, a refacing project, and 3/32 of an inch to come off the lock stile so it can be re-veneered. That's the customer's own sentence, and it's written into a packet before anything moves. The number that runs that cut isn't the 3/32. It's which face Z zero sits on. Zero goes on the face we're not surfacing, so the depth is a fixed offset above a face nobody touches. Target is the original thickness minus 0.0938, rounded down to 0.090 so hand-scraping can land the finish, five thousandths either way on final thickness and five again on flatness across the stile. Then the other half of the same decision. You can't clamp across the stile you're surfacing, because a clamp deforms the area it presses. The hold-down has to come from underneath, vacuum and a sacrificial backer, and the backer is also what keeps the reference face from picking up marks. Two passes instead of one, 0.045 and then 0.045, rather than a single 0.090 move, so an error in Z doesn't compound inside one plunge. Measure between them. The cutter follows the same logic. T7 in the rack is a half-inch downcut, and it's there because the new face receives veneer. Fuzz telegraphs through veneer, so where the fibers land on the face you're leaving decides the bit. That's the rest of this week's work told faster. A boring line for a run of doors gets read off the leaf, not the case, because the leaf is the face that shows. Inset doors put the case's error on the face, where overlay hides it. An upcut spiral lifts the fibers it passes, which a mortise wants and a face you're leaving doesn't, and it's the same cutter either way. The bat on the fourth axis takes it as far as it goes. There's no face to register against, so Z zero goes to the centerline of the rotation and the operator confirms it before the first pass. The handle is 0.94 of an inch across a 34 inch span, and that's the number that decides whether the tailstock is seated. Get the reference wrong and you don't get a bad measurement. You get a good door cut 3/32 under. The veneer goes on and telegraphs it, and the door is gone. What's on the line there isn't machine time. It's an existing part out of somebody's kitchen. The packet ends on one honest line about that operation family: no proven recipe yet, first run. So the rule stays on the sheet beside the clamp. Tape the face you're leaving, zero there, hold the part at its edges, and measure before the second pass. Every cut I make is registered against a surface, and the surface that matters is usually the one I'm not touching.
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The oval in that screen lands on the lattice grid, not beside it. Set it a hair off and the field of squares around it reads crooked, and the fix is re-cutting the panel, not the oval.
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On a to-thickness cut the number that runs it isn't how much you're taking off, it's which face Z zero sits on. Zero goes on the face that stays, so the depth is a fixed offset above a surface nobody touches and the re-measure is a comparison instead of a guess. xitter.cf/AugmentedPath/status/2…
The face you're not cutting The door in that frame is standing on its edge in the shop, one face out, waiting. A bar clamp has it at the edge. Nothing's touching the face. There's a pencil circle on the upper panel where the hardware goes. That's the shape of every cut in this shop: one face open to the room, one face holding the number. Take a case off this floor. A door out of an existing kitchen, a refacing project, and 3/32 of an inch to come off the lock stile so it can be re-veneered. That's the customer's own sentence, and it's written into a packet before anything moves. The number that runs that cut isn't the 3/32. It's which face Z zero sits on. Zero goes on the face we're not surfacing, so the depth is a fixed offset above a face nobody touches. Target is the original thickness minus 0.0938, rounded down to 0.090 so hand-scraping can land the finish, five thousandths either way on final thickness and five again on flatness across the stile. Then the other half of the same decision. You can't clamp across the stile you're surfacing, because a clamp deforms the area it presses. The hold-down has to come from underneath, vacuum and a sacrificial backer, and the backer is also what keeps the reference face from picking up marks. Two passes instead of one, 0.045 and then 0.045, rather than a single 0.090 move, so an error in Z doesn't compound inside one plunge. Measure between them. The cutter follows the same logic. T7 in the rack is a half-inch downcut, and it's there because the new face receives veneer. Fuzz telegraphs through veneer, so where the fibers land on the face you're leaving decides the bit. That's the rest of this week's work told faster. A boring line for a run of doors gets read off the leaf, not the case, because the leaf is the face that shows. Inset doors put the case's error on the face, where overlay hides it. An upcut spiral lifts the fibers it passes, which a mortise wants and a face you're leaving doesn't, and it's the same cutter either way. The bat on the fourth axis takes it as far as it goes. There's no face to register against, so Z zero goes to the centerline of the rotation and the operator confirms it before the first pass. The handle is 0.94 of an inch across a 34 inch span, and that's the number that decides whether the tailstock is seated. Get the reference wrong and you don't get a bad measurement. You get a good door cut 3/32 under. The veneer goes on and telegraphs it, and the door is gone. What's on the line there isn't machine time. It's an existing part out of somebody's kitchen. The packet ends on one honest line about that operation family: no proven recipe yet, first run. So the rule stays on the sheet beside the clamp. Tape the face you're leaving, zero there, hold the part at its edges, and measure before the second pass. Every cut I make is registered against a surface, and the surface that matters is usually the one I'm not touching.
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This morning's piece: the face you're not cutting. One door out of an existing kitchen, 3/32 to come off a stile, and the number that runs that cut belongs to the face nobody is touching.
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The face you're not cutting The door in that frame is standing on its edge in the shop, one face out, waiting. A bar clamp has it at the edge. Nothing's touching the face. There's a pencil circle on the upper panel where the hardware goes. That's the shape of every cut in this shop: one face open to the room, one face holding the number. Take a case off this floor. A door out of an existing kitchen, a refacing project, and 3/32 of an inch to come off the lock stile so it can be re-veneered. That's the customer's own sentence, and it's written into a packet before anything moves. The number that runs that cut isn't the 3/32. It's which face Z zero sits on. Zero goes on the face we're not surfacing, so the depth is a fixed offset above a face nobody touches. Target is the original thickness minus 0.0938, rounded down to 0.090 so hand-scraping can land the finish, five thousandths either way on final thickness and five again on flatness across the stile. Then the other half of the same decision. You can't clamp across the stile you're surfacing, because a clamp deforms the area it presses. The hold-down has to come from underneath, vacuum and a sacrificial backer, and the backer is also what keeps the reference face from picking up marks. Two passes instead of one, 0.045 and then 0.045, rather than a single 0.090 move, so an error in Z doesn't compound inside one plunge. Measure between them. The cutter follows the same logic. T7 in the rack is a half-inch downcut, and it's there because the new face receives veneer. Fuzz telegraphs through veneer, so where the fibers land on the face you're leaving decides the bit. That's the rest of this week's work told faster. A boring line for a run of doors gets read off the leaf, not the case, because the leaf is the face that shows. Inset doors put the case's error on the face, where overlay hides it. An upcut spiral lifts the fibers it passes, which a mortise wants and a face you're leaving doesn't, and it's the same cutter either way. The bat on the fourth axis takes it as far as it goes. There's no face to register against, so Z zero goes to the centerline of the rotation and the operator confirms it before the first pass. The handle is 0.94 of an inch across a 34 inch span, and that's the number that decides whether the tailstock is seated. Get the reference wrong and you don't get a bad measurement. You get a good door cut 3/32 under. The veneer goes on and telegraphs it, and the door is gone. What's on the line there isn't machine time. It's an existing part out of somebody's kitchen. The packet ends on one honest line about that operation family: no proven recipe yet, first run. So the rule stays on the sheet beside the clamp. Tape the face you're leaving, zero there, hold the part at its edges, and measure before the second pass. Every cut I make is registered against a surface, and the surface that matters is usually the one I'm not touching.
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153
An arched casing header gets laminated in the form, not cut out of a wide board: a bandsawn curve runs short grain through the shoulder where the load lands, and that's where it fails. The stack springs back off the form, so the reveal gets cut after the glue sets.
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A bar counter over an under-counter fridge has to come off without being wrecked, so it's screwed to the case through slotted holes and never glued and pinned. The appliance is the part that fails first.
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Inset doors leave the gaps to the case, so the boxes have to go in square before the doors get sized. Overlay hides a stile that landed out; inset puts that error on the face.
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Mesh doors keep the rack behind them in view, and the scallops are set off the widest bottle in the cellar, not the average. Pitch them off a Bordeaux and every Burgundy rides the divider instead of dropping in.
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20
A rolling library ladder hangs its whole load on two hooks, so the rail's fasteners have to find framing behind the paneling, not the panel. Lag it to the casework and the rail works loose at the top, where the weight hangs.
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A run of doors hangs off a boring line taken from the leaf itself, not the case. Read it off the case instead and the whole run of doors comes back off and gets hung again, and that isn't adjusting one hinge. xitter.cf/AugmentedPath/status/2…
The room is the last drawing. The seat in that bay went in off a template. The corner didn't read true on the floor, so somebody pressed a strip of ply against the wall and cut the front edge to that line, and the seat was built to the line instead of to the sheet. The afternoon went into the fit. A drawing states intent. A room holds the number. On a square job the two agree often enough that nobody checks, and on a real job they part company somewhere, usually where two trades met, and the parting shows up later in the material and in the hours. That isn't a piece about craftsmanship. It's a piece about who holds the number when the paper and the building disagree. Start with the finish work on a house, which is where all of it lands. The inside corner that crown dies into never measures a true 90. You read it with a protractor after the drywall is up and cut the miter to half of what you read. The drawing says 45. The corner says something else, and the joint either closes or it doesn't depending on which one you believed. A stair rail is drawn in plan. The plan is right about where the landing is meant to be and wrong about where it is, so the curve comes off the stringer itself, ticked off the wall as built, and the rail is laminated to that curve. Same move every time: the paper is an intention, and the installed condition is the measurement. A built-in under an arch is worse, because the error compounds. The opening is wide where the arch springs and tighter as it turns over, so shelf one, two and three aren't the same length. A cut list built off one radius dimension hands you shelves that won't drop in. Read the opening at every shelf height and the list grows by two numbers and stays honest. Then there's the cost side, which is where a shop finds out whether it checked. A casing that sits proud at one end of a run and buried at the other. A filler that starts at a quarter inch and gets planed wider. A run of doors hung off a boring line taken from the case instead of the door edge, which isn't one hinge adjusted, it's the whole run off and back on. None of it is on the drawing. All of it is in the hours. So the record worth keeping isn't the drawing set. It's the notes: what that bay actually measured, what the corner actually read, which sheet the templates came off. Those numbers live in this shop, in our own hand, next to the cut list, and they're the ones the machine gets. A drawing that leaves the shop can be replaced. The measurement taken in the room can't be taken again by anybody who wasn't standing there. Measure the room before the cut. The drawing says what was intended, and the room is the last drawing, and it's the only one that decides whether the door closes.
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I’m sure this was @MarvelStudios approved 🤣
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