IKEA Trofast drawer slides for Kallax Storage

Allows installing 10 cm tall Trofast bins in Kallax storage units
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updated August 16, 2023

Description

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Sized to fit on my printer and with a dovetail join. 

To install a full set of slides in a Kallax cube, print 6x of each slide, 2x of vertical alignment guide, and 1x of front alignment guide.

Requires #6-¾ screws or equivalent and use MDF coarse screws if possible.  I used very pointed screws to self drill.  Otherwise you might need to pilot drill.  Length is pretty critical as it will not poke through the thin inside walls.  (Actual screw I use: https://www.amazon.com/gp/product/B08QW8JYFJ)

Front alignment is important as if slides are vertically aligned and on each side of a thin wall, the screws need to miss.  The slides have screw holes offset to make this happen, as long as the front alignment is used.

Printing

I use 0.6mm nozzle with 2 walls, 6% grid infill on 45, 3 top and bottom walls.  This has been really strong and 117g of filament per slide pair.

The original Female Slide requires support for the dovetail portion. If you use the new Female slide with included support, nothing need support in slicer. This has an included support that can easily be removed by grabbing with pliers on the portion sticking out and giving a tug. Much faster than removing the slicer generated support. I did this redesign as I was printing a ton of these and the support removal was annoying.


Installing

Installed slides press fit to the top, and they are shorter than the opening to allow mounting with the wall supports in place. 

When tightening, turn until the slide closes the gap with the wall and ¼ turn further.  These DO NOT need to be really tight as the bins push against the side. However, they do need to be strong in the vertical and stripping them out hurts this.

Once the top slide is in place, press the vertical alignment guides on to this and a new slide for positioning.  Shift to align with front and screw in.  Repeat one more time for the bottom.

Note: If you want to use the taller bin along with a 10cm one, only install the top slide and just put the bin in the Kallax below.  IKEA did not design these to fit quite equal.

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