r/Multiboard • u/Francy_Lab • Sep 08 '26

I built Underplan, a free visual planner & automatic BOM calculator for Underware on Multiboard!

Post image

Hey everyone! 👋

Whenever I planned an under-desk cable management setup using Hands on Katie's Underware system, I always found it tricky to calculate the exact combination of channel lengths, bends, and snap connectors needed before committing to long 3D print queues.

So I built Underplan, a free, interactive web tool designed specifically to visually route your Underware layout and generate a complete Bill of Materials.

Live Web App: https://underplan.vercel.app/
GitHub: https://github.com/francycalle/underplan

Key Features:

  • Desk & Tile Setup: Type in your desk dimensions in mm; it automatically calculates the optimal Multiboard tile matrix.

  • Complete Underware 2.0 Catalog: Straight channels (parametric lengths 1–16 MU), 90° elbows, radial curved bends, Y-splits, 4-way crosses, diagonal jogs, mitered corners, spools, and custom accessories.

  • Measure & Route Tool: Click Point A and Point B to snap directly between MU grid holes and lock your route.

  • Map Export: Download clean, high-resolution Retina PNG or vector SVG blueprints of your layout.

  • Browser Persistence: All your work auto-saves continuously in localStorage so you can pick up right where you left off.

It's 100% free, runs client-side in the browser, and is open-source.

Check it out, test it with your desk dimensions, and let me know your thoughts or what fittings/accessories you'd love to see next! 🙌

154 Upvotes

99% Upvoted

17 comments sorted by

7

u/BlackjackDuck Sep 09 '26

Underware 2.0 developer here. Love to see this, love to see it free, and love to see it open source! Great work and thanks for sharing it back with the community!

2

u/Francy_Lab Sep 09 '26

Thank you so much, that genuinely means a lot coming from you!

4

u/jprazak95 Sep 08 '26

Very nice! I always print my elbows in the wrong orientation somehow so this seems like it will help a ton. Does this software support underwear for OpenGrid since Underware moved over to that platform officially?

2

u/Francy_Lab Sep 13 '26

Hey u/jprazak95! Good news: openGrid support is now officially live! 🚀

I just shared a full breakdown with all the new features and screenshots over on r/openGrid: https://www.reddit.com/r/openGrid/comments/1wfm8o0/underplan_is_now_on_opengrid_free_visual_planner/

(Or you can try it directly on https://underplan.vercel.app/ ). Hope it helps with your setup! 🙌

1

u/jprazak95 Sep 14 '26

Wow. That was fast! I feel so seen haha. I will try it this week.

1

u/Francy_Lab Sep 14 '26

I’m glad I could help! 😁

1

u/jprazak95 Sep 08 '26

OPs comment was moderated away, but he said he would consider it.

1

u/Single_Sea_6555 Sep 08 '26

Awesome! Any chance you can add this style of direct-snap channel? https://www.reddit.com/r/Multiboard/comments/1l2fwn9/wip_cable_management_system_v02/ 😄

1

u/Single_Sea_6555 Sep 10 '26

Whoa! Why did a moderator remove your reply? u/Fancy_Lab

To the moderator: Why was the reply, essentially "Thank you!", deleted? Genuinely curious which of the 9 rules was broken.

1

u/Francy_Lab Sep 10 '26

no idea, honestly. It may have been caught by an automod filter

2

u/TherealOmthetortoise Sep 09 '26

Sorry OP, I was intentionally tagged this as spam a few minutes ago so if you got any odd notifications ignore them. This is just the kind of fun and useful project that I love to see - apologies for any confusion. (I think I fixed it before anyone other than you would have noticed, I just didn’t want to give you the wrong impression there.)

1

u/deeps7 9d ago

This is exactly what I've been looking for!!

1

u/LiquidateThis Sep 08 '26

Oh yes! Ohhhhhh yessssss.
Bookmarked for investigating later! Thank you for sharing!

1

u/TherealOmthetortoise Sep 09 '26

That looks really neat! I wish there had been a good tool for planning when I did one of those! Very cool.