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Replacement parts
IKEA Billy shelf pin replacement for 5 mm holes
A replacement shelf support for the IKEA Billy bookcase, Hemnes and Ivar, which use 5 mm holes and lose pins every time you move house. The pin has a 4.9 mm shank 10 mm long with a 0.5 mm chamfer, a 6 mm collar that stops it pushing through the side panel, and an 18 mm long L-shaped shelf rest 3 mm thick with a 2 mm lip that stops the shelf sliding forward. Printed in PETG the pin takes around 12 kg per shelf. Print the pins lying on the flat of the L in sets of eight so a single job covers two shelves. Open the ready-made model free, resize it on your phone or computer, then download a print-ready STL, 3MF or G-code sliced for your printer, free.Opening the ready-made model and downloading it as STL or 3MF are free, no card; AI changes use credits, from Maker at $7.99 a month.No printer? We print this part and ship it to your door. See its priceUpdated
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Adjust
Change its numbers in the viewer for free, or ask the AI in the chat: wall thickness, hole size, the thing it clips onto. AI changes use 2 credits per request (1 for a quick edit, 3 for a redesign), paid with a plan from Maker at $7.99 a month.3Print
Download a watertight STL or 3MF free, with your numbers and hand edits, or G-code sliced for your printer at the same price. After an AI change the download is included in every plan (4 credits without one).
Dimensions of the ready-made model (editable)
| Parameter | Value |
|---|---|
| shank diameter, fits 5mm hole with clearance | 4.9 mm |
| shank length | 10 mm |
| chamfer at shank tip | 0.5 mm |
| collar diameter | 6 mm |
| collar thickness | 1.5 mm |
| L-shaped rest length (from collar face) | 18 mm |
| rest width | 8 mm |
| rest thickness | 3 mm |
| front lip height | 2 mm |
| front lip thickness | 2 mm |
| number of pins | 8 |
Example prompt
Model a shelf pin with a 4.9 mm diameter shank 10 mm long and 0.5 mm chamfer, a 6 mm collar 1.5 mm thick, and an L-shaped shelf rest 18 mm long, 8 mm wide and 3 mm thick with a 2 mm front lip, for 5 mm holes in an IKEA Billy bookcase, arranged as a set of eight.
Fit notes
Hole sizes and panel thicknesses differ between IKEA lines and older furniture, so a pin generated to the measured hole fits firmly rather than wobbling. In SpeakCAD you give the hole diameter and shelf thickness, preview the pin in the browser, ask for a version with a rubber-padded rest in the chat and download the STL.
Questions people ask about an IKEA Billy shelf pin replacement for 5 mm holes
A replacement shelf support for the IKEA Billy bookcase, Hemnes and Ivar, which use 5 mm holes and lose pins every time you move house. The pin has a 4.9 mm shank 10 mm long with a 0.5 mm chamfer, a 6 mm collar that stops it pushing through the side panel, and an 18 mm long L-shaped shelf rest 3 mm thick with a 2 mm lip that stops the shelf sliding forward. Printed in PETG the pin takes around 12 kg per shelf. Print the pins lying on the flat of the L in sets of eight so a single job covers two shelves.
Click Open it free on this page and create a free account (no card): the ready-made model opens in your browser, on your phone or computer, nothing to install. Change its numbers in the viewer for free and download a watertight STL or 3MF free, or G-code sliced for your printer at the same price. An AI change in the chat uses 2 credits per request (3 for a redesign), and the download after it is included in every plan (4 credits without one). Start with Maker: 50 credits a month for $7.99, cancel anytime.
On this page: open the ready-made model free in a SpeakCAD account (no card), change any dimension in the viewer, then download the STL or 3MF free, or G-code sliced for your printer at the same price.
A shared STL is modelled for someone else's measurements. Here you open the ready-made model free, change it to your measurements in the viewer, then download a file sized for the part you actually own, free as STL or 3MF.
Yes. SpeakCAD slices the part on its servers with OrcaSlicer and your printer's official profile (380+ printers, including Bambu Lab, Prusa, Creality and Elegoo), and you download the G-code (a sliced .gcode.3mf for Bambu Lab printers). G-code sliced for your printer costs the same as the STL: included in every plan, free for a part you shaped by hand, 4 credits without a plan for a part with AI work in it. Pick your printer on the printers page to see its profile.
No. SpeakCAD runs in the browser on your phone or computer: the chat, the 3D engine and the live viewer load in the tab. The only file you download is the finished STL, 3MF or sliced G-code.
Print it your way
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