Replacement runners for Ikea RAST chest of drawers

by pozorvlak, published

Replacement runners for Ikea RAST chest of drawers by pozorvlak Mar 13, 2013
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The plastic runners on Ikea RAST chests of drawers break very easily, leading to stuck drawers and frustration. This Thing allows you to replace them with something better.

Many thanks to Dr Mike Prior-Jones (@mrpj100) and to Stuart at Glasgow MAKlab for their help with this project.


  1. Download the SVG file. The SCAD and STL files are from an earlier approach, and are included for interest; they should provide 3D-printable replacements for the existing runners, but I haven't actually tried them. Let me know if they work!
  2. Laser-cut the SVG file out of 8mm plastic sheet. HDPE would be best, because of its low friction; I used some scrap acrylic, which worked fine.
  3. Countersink the screw holes.
  4. Remove the drawers and the existing runners.
  5. Remove the plastic knobs from the inside of the drawers - since the new runners are not hollow, there's nowhere for them to go.
  6. Mark where the holes need to go on the wood.
  7. Using an awl or reamer, make starter holes for the screws.
  8. Screw in the new runners using 20mm size 4 self-tapping wood screws (I used these: http://www.screwfix.com/p/screw-tite-prodrive-csk-4-x-20mm-pack-of-200/57300).
  9. Slide the drawers back into the chest.
  10. Rejoice in your new freely-sliding chest of drawers.

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I paid a local 3d printer operator to make this based on your .svg file and it turned out to be bigger than intended. Please help.

Physical dimensions are included in the SVG file. They should be correct, but I haven't looked at this project for years and don't have access to the end-result to check. So, here's what I suggest you do:

  1. Print out the SVG file on paper at 100% magnification. It should be 41cm wide from the left edge of one runner to the right edge of the next one. Compare this to the broken IKEA runners.
  2. If the printout doesn't match the broken runners' size, I screwed up; please adjust the dimensions in the SVG file (you can edit it in a text editor) until it's correct, then upload your new variant to Thingiverse and point everyone there.
  3. If the printout does match the broken runners' size, the print shop screwed up and cut it to the wrong size; go back and demand either your money back, or a new copy that's the right size.

By the way, the SVG file is intended for laser-cutting, not 3D printing. The STL file is intended for printing, but I recommend using the SVG and laser-cutting instead. Did you use the right process on the right file?