XXL Ašių taisyklė — a 90° rotation that removes a daily manual fix

Rotates SWOOD CAM .XXL part programs so the long side runs along the machine's X axis. For an SCM Startech CN Plus. Drop the file in, download the fixed one.

🇱🇹 Lietuviškas aprašymas: README.lt.md

The problem

SWOOD exports a part in the orientation it has in the model, not the orientation the machine accepts. Example — DESINE_SPORTO_RUBINE_LENKTAS_1OP.XXL:

H DX=684 DY=2200 DZ=18 ...        <-- DY 2200 mm doesn't fit the Y travel

So somebody turns it by hand. Every time.

Don't assume the rule — prove it

Before automating this I parsed 1,284 programs that had actually been cut on this machine:

	value
largest DX used	2746 mm
largest DY used	1015 mm
programs where DY > DX	125 (9.7 %) — all of them fit within Y
programs with DY > 1300	0

Y is the short axis, and nothing real has ever needed more than 1015 mm of it. DY=2200 is physically impossible, so rotating it is not a heuristic — it's the only valid output. That's what made it safe to do automatically.

What it does

Four steps, one screen:

1. Drop a .XXL file. If the part is lying across the axes (DY > DX) it is rotated immediately — that's the whole point of opening it.
2. See it — 2D drawing of the panel with every drilling and routing operation placed, plus a 3D view. Click a hole to nudge or skip it.
3. Check — the operations list shows what will be written and what will be dropped.
4. Download the corrected program.

It rewrites the header, rotates every operation's coordinates, remaps the face/edge codes and arc directions, and stamps the file so you can tell a fixed program from an original.

Also handles thickness override and edge/routing operations, with fixtures covering SWOOD and Maestro output.

Make a part by hand

＋ Nauja detalė (top right) opens a part builder, so the workshop can make a program without the engineer or SolidWorks: set the panel size, add holes (Ø5/8/15/35, blind or through), shelf-pin rows, hinge cups, edge holes, grooves, corner notches, cut-outs and round holes, position each one from the edge it was measured from, drag it on the drawing, and download or send the programs straight to the machine.

It writes exactly what step2xxl writes (same lines, same face numbering, _1OP/_2OP/_3OP) and follows the same machine rules: underside work goes to a turned-over 2OP, Ø5 in a long edge to a 90°-rotated program, routing always leaves 2 mm, ramps in instead of plunging and never goes more than 20 mm outside the panel. Invalid parts can't be downloaded; every check says why in plain Lithuanian.

Run it

python3 serve.py          # http://localhost:8748/

Tests: http://localhost:8748/test.html — 375 checks against real .XXL fixtures in fixtures/ (SWOOD portrait/edges, Maestro arcs/edges/routing).

There's a windows/ folder with a double-click launcher for the shop PC, because the person using this shouldn't have to know what a terminal is.

Built with

Vanilla JavaScript, HTML Canvas, no dependencies, no build step. ~3,300 lines.