01
Maker's Almanac
A 77-section offline bench reference: the formulas, pinouts, conversions, and tables you reach for at the workbench, all in a single file.
FI Field Instruments · Engineering Toolkit
Engineering Toolkit
Shop and bench engineering: workbench references, geometry and fabrication prep, and instruments that carry a design from drawing to cut part. Source on GitHub under GPL-3.0.
- Instruments
- 24
- Runs
- Offline, in the browser
- Licence
- GPL-3.0
- Accounts
- None, ever
02
Injection Mold from STL
A Python script that turns any STL part into the two halves of a basic two-plate injection mold, with sprue, runner, gate, vents, and alignment pins, ready to 3D print or to CNC a soft aluminum tool.
03
DataBench
A browser-based dashboard builder for quick data visualization and analysis. Load a CSV, XLSX, or published Google Sheet, then build tables, charts, pivots, and KPI cards with calculated fields, table joins, filters, and themes. Exports to HTML, PNG, PDF, and PowerPoint, autosaves, and saves JSON projects, with a mobile-friendly viewer.
04
Test Bench
A test planning and test results notebook that bridges design intent and evidence: what you are testing, why, what success means, and what actually happened. A plan without a result is a wish, a result without a plan is an anecdote. Test Bench keeps the pair together, holds failures in a queue until they are answered, does the arithmetic on the verdict, and prints a sheet you can carry to a bench that has no screen.
05
Photoplot
A Gerber and Excellon drill viewer with an aperture wheel: pick a D-code from the dial and every object drawn with that aperture lights up. Layer identification, clear-polarity rendering, a measure tool, design rule check, and PNG and SVG export. Single file, runs from file://.
06
Pantograph
A G-code backplotter and cycle-time bench. Reads router, laser, and 3D printer dialects, plots the toolpath in 3D, estimates real cycle time from an acceleration-aware motion plan, and flags rapids that cut through stock. Includes a feeds-and-speeds calculator and a tool crib.
07
Cutplanner
True-shape nesting for laser and router work: pack real part outlines, not bounding boxes, onto sheet stock to get the most out of every board.
08
Loftsman
Turns an STL into a laser-ready SVG. Three flattening modes take a 3D part down to cuttable flat stock, named for the loftsman who drew a ship's lines out full size on the mould-loft floor.
09
Cooper
A parametric enclosure generator: finger joints, T-slot fasteners, kerf compensation, and connector cutouts, with output that feeds straight into Cutplanner for nesting.
10
Scantling
A lumber instrument for the woodshop: a board-foot rack, a cut list with per-board defect maps, glued-panel layout, and wood movement calculated from real weather logs.
11
Colorimeter
A camera-based palette extractor: point it at a scene and it pulls the ten dominant colors, each with three complements, for pinning down a palette from the world in front of you.
12
Bayplan
A workshop floorplan planner. Lay the shop out to scale, place machines, benches, and utility nodes, and read the whole layout back through a systems overview before anything heavy gets moved.
13
Ballast
A UPS sizing bench. You hold a flashlight, you read a rating panel, you type what it says, and Ballast hands you a UPS, a battery bank, and a branch circuit.
14
Cutline
A self-contained, browser-based vector drawing and laser-project prep tool. Create, check, arrange, and export 2D geometry for laser cutters without a desktop CAD or illustration package.
15
Harness
A wiring harness planner and documenter. Lay out a harness and it produces the tangible outputs a build needs: wire labels, pinout diagrams, a cut list, a bill of materials, and a continuity-test sheet.
16
Lamina
A print-preparation and qualification tool for additive manufacturing. It covers the prep and qualification steps around a 3D print, deliberately scoped narrow rather than trying to be a full slicer.
17
Templet
A front-panel drilling template generator. Place connectors, pots, switches, and holes, then export a 1:1 printable PDF, SVG, or DXF to tape onto the panel and drill. Where Cooper makes the box and Panelwright the screen UI, Templet bridges to drilling the metal.
18
Cogwright
A local-first instrument for mechanical transmission design, geometry, and fabrication prep. Parametric assembly, a ranked design optimizer, and profile generators, with material and process intelligence on top, produce 1:1 SVG profiles, shaft plates, fabrication packages, process assessments, dimensional inspection plans, and first-article qualification records. One self-contained HTML file, no server or libraries.
19
Flask
An STL to mold-negative generator. Turns a positive, a master object as an STL, into a printable or machinable mold exported as STL, for gravity-poured polyurethane resin casting and hobby or low-volume plastic injection molding. Offers a one-piece open-face mold and a two-piece split mold, and bakes mold-making best practice into both automatic geometry and guided, explained controls.
20
Quadrant
Four sensing stations in one single-file web app, sharing one graduated arc. Tremor reads machine vibration against the ISO 10816-3 zones and tags spectrum peaks to bearing, gear, and shaft frequencies. Stroboscope freezes a rotating pattern to find true speed, with a slow-motion offset. Photometer meters illuminance, flicker, and colour temperature through the camera. Dosimeter runs the microphone through A-weighting and integrates noise dose over a shift.
21
Rungwright
A local-first instrument for ladder logic: design the rungs, simulate PLC-style scan behavior, generate Arduino code, reconstruct compatible control code, test control behavior, and keep an engineering evidence trail as you go.
22
Bendline
A local-first browser instrument for planning sheet-metal and folded-material parts. It turns a finished folded form into an inspectable flat pattern, bend sequence, relief plan, and fabrication evidence package, without pretending to replace full mechanical CAD, machine manuals, operator judgment, or a physical test coupon.
23
Fixture
A local-first mechanical and electronic test-fixture engineering instrument for small-run electronics production, prototype validation, programming fixtures, repair jigs, cable testing, and manufacturing test development.
24
Repairmap
A local-first repair disassembly and reassembly instrument. A repair rarely fails because the fault was hard to find. It fails because the information needed to put the object back together was destroyed on the way in: the screw that was a different length, the clip that faced the other way, the number on the adjuster before it moved. Repairmap exists to hold that information while your hands are busy.
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