Name: poly-bagger
Author: techmore

Imported from techmore/thril (poly-bagger/AGENTS.md). Install upstream with npx skills add techmore/thril --skill poly-bagger. Copyright stays with the author.

Poly Bagger Printer — AI Context Summary

Project

Print UPC barcode labels from .docx files → ZPL → Zebra ZTC 110Xi4-203dpi ZPL (203 DPI thermal transfer). Labels feed into an Advanced Poly T-1000 bagger machine.

Critical Rules (learned the hard way)

NEVER use ^PON or ^FWN in ZPL — This printer rejects jobs with those commands ("Zebra is not ready"). Orient the image in Python instead.
Reboot printer to clear errors — After a bad ZPL, CUPS re-enable won't fix it. The printer needs a power cycle.
Bit ordering — byte_val = (byte_val << 1) | bit where bit = 0 if px else 1. First pixel = MSB = leftmost dot. Do NOT reverse bits.
"Flip" = 180° rotation (upside down ↔ right-side up). Never mirror/flip left-right.
-o raw is mandatory — Without it macOS converts ZPL to raster = garbled.

Quick Commands

# One-step automated
python3 print_label.py "UPC Labels/LABEL.docx" --rotate 180

# Generate only
python3 print_label.py "UPC Labels/LABEL.docx" --no-print

# Send existing ZPL
lp -d Zebra -o raw "UPC Labels/LABEL.zpl"

# Check status
lpq -P Zebra
lpstat -p Zebra

# Reboot needed? Cancel + re-enable first:
cancel -a Zebra
cupsenable Zebra

Printer Info

Model: Zebra ZTC 110Xi4-203dpi ZPL
Serial: JJL100932
Connection: USB (usb://Zebra%20Technologies/ZTC%20110Xi4-203dpi%20ZPL?serial=JJL100932)
DPI: 203
Queue name: Zebra

Label Pipeline

.docx → extract image (from word/media/) → optionally rotate 180° → convert to 1-bit → scale (4x = 3.80") → encode as ^GFA hex → wrap in minimal ZPL (^XA ^LL ^PW ^LS0 ^FO ^GFA ^FS ^XZ) → lp -d Zebra -o raw

Padding (adjust if cut off)

bottom_padding = 80
side_padding = 120
top_margin = 30
left_margin = 60

Scale Reference (at 203 DPI)

Scale	Image dots	Physical size
3×	579×150	2.85" × 0.74"
4×	772×200	3.80" × 0.99"
5×	965×250	4.75" × 1.23"

Docs

UPC_Label_Bagger_Workflow_v3.html — full documentation
print_label.py — automated one-step script
UPC Labels/*.docx — source label files
UPC Labels/*.zpl — generated ZPL files

{ "ocm": "1", "id": "techmore-thril-poly-bagger", "kind": "skill", "name": "poly-bagger", "description": "1. **NEVER use `^PON` or `^FWN` in ZPL** — This printer rejects jobs with those commands (\"Zebra is not ready\"). Orient the image in Python instead.", "publisher": "techmore", "version": "1.0.0", "capabilities": { "domains": [ "coding" ], "tags": [ "skill-md", "github-agents" ], "languages": [ "en" ] }, "quality_prior": 0.6, "examples": [ "1. **NEVER use `^PON` or `^FWN` in ZPL** — This printer rejects jobs with those commands (\"Zebra is not ready\"). Orient the image in Python instead." ], "primary": false, "metadata": { "source": { "provider": "github-agents", "repository": "https://github.com/techmore/thril", "path": "poly-bagger/AGENTS.md", "ref": "ee5e76bb587bcad581354fadf2e3de4b11bd5970", "url": "https://github.com/techmore/thril/blob/ee5e76bb587bcad581354fadf2e3de4b11bd5970/poly-bagger/AGENTS.md", "key": "techmore/thril/poly-bagger/AGENTS.md" } }, "instructions": "# Poly Bagger Printer — AI Context Summary\n\n## Project\nPrint UPC barcode labels from .docx files → ZPL → Zebra ZTC 110Xi4-203dpi ZPL (203 DPI thermal transfer). Labels feed into an Advanced Poly T-1000 bagger machine.\n\n## Critical Rules (learned the hard way)\n\n1. **NEVER use `^PON` or `^FWN` in ZPL** — This printer rejects jobs with those commands (\"Zebra is not ready\"). Orient the image in Python instead.\n\n2. **Reboot printer to clear errors** — After a bad ZPL, CUPS re-enable won't fix it. The printer needs a power cycle.\n\n3. **Bit ordering** — `byte_val = (byte_val << 1) | bit` where `bit =", "cost": { "context_tokens": 544 } }

poly-bagger

About

Poly Bagger Printer — AI Context Summary

Project

Critical Rules (learned the hard way)

Quick Commands

Printer Info

Label Pipeline

Padding (adjust if cut off)

Scale Reference (at 203 DPI)

Docs

Use it

Manifest

Reviews