Makerkar – Library Makercart – INSTRUCTABLE

The MAKERKAR in constructed out of 30x30 extruded aluminum profiles.
We used both internal cornerconnectors, which will be invisible, and external ones, where one should not forget to slide the nuts in advance in the profile.


  • Allen key 5 mm
  • Allen key 3 mm
  • square
  • tape measure

Building the frame requires no welding, drilling or gluing, just bolting.


Bill of materials:

Our supplier is who cuts profile to size and ships international.

LC Aluminum T-slot profile 30x30
1075 mm               4 pcs       frame horizontal
1060 mm               4 pcs       frame vertical
1015 mm               4 pcs       shelf horizontal
640 mm               12 pcs       horizontal all
700 mm                 2 pcs       undercarrier
Internal corners  IHS1-90-8             20 pcs   hereunder referred to as intc
External corners  AHS1-28               34 pcs  hereunder referred to as extc
Cylindrical bolts M6 x 12                  84 pcs
Hammernuts                                   84 pcs

Please note:
- the hammernut with ball KGM1-M6-10 fits very tight and needs to be filed down in order to slide in the profile.
- we used M6 x 16 with 2 washers.

An underframe of a library bookcart
Plywood panels 6 mm and 4 mm according to these  <to be done> .dxf files.
A commercial 100 cm roll-up banner, cassette length 1015 mm

Building the frame


Take 2 x 1075 and in between two 640

Slide 2 nuts in the top of each 640 (not shown on next pic, they will be used later to afix the cassette)
Slide 3 nuts in each 1075 and 2 in the 640 and fix loose with an extc
Bolt a third 640 in the middle.
Slide 4 intc in the corners of the 1075 with angle up.

Put the frame totally flat (!) on the floor, check with square and tighten all.


Now prepare both sideframes

side frame parts

Slide 4 nuts into the 640 and put the profile on the floor with these nuts under (they will be used later for the hinges)
Bolt 2 extc on the inner sides of the  640
Bolt 2 extc on top of the two 640
Slide 2 nuts into each 1015 Bolt one 640 42 cms from the top end
Bolt the other 26 cms from the top end

Slide an extra nut in the topside of each 1015 (not shown on the pic, will be used later to afix the cassette)

Make an identical second side frame

Now fasten the sides on to the intc of the bottom frame

Prepare the top frame:
With 4 extc mount two 640 between the 1070
Slide an intc in each of the long ends.


Briefly put the top on the upright sides to see if it fits, then take it off again and put it aside.


For the lower and upper shelf slide 4 nuts into each of the four 1015
(the middle nuts are for the movable 640s later)
Slide an intc facing down in each of the long ends of the 1015

Schermafbeelding 2017-12-30 om 18.05.15

Lower one 1015 between the sides till 42 cms from the top and tighten.
Lower the second one from 26 cms from the top and tighten.
Same for the two on the rear.
Bolt all to the side panels.


To finish off: mount the top


Now turn the frame upside down to bolt both 700 that will later rest on the bookcart frame.



The notches on the extc look obstrusive, but that can easily be overcome.
Just clamp the 700 to the frame first, then add two washers on the bolts and tighten. Remove the clamp.

Put the frame normal again to mount it on the wheels.


For the prototype BSF donated us a bookcart, but we only needed the braked frame.

Schermafbeelding 2017-12-30 om 18.41.20

The frame was mounted with pieces of M6 rod.
When at pilots in libraries the wheelframe might prove not to be stable enough we can replace them by wheels more to the corners of the frame or with an Europallet 80x60 carrier (e.g. Kruizinga 8522799)


And there it is: the MAKERKAR


The panels and drawers can be found here <to follow>