Addi – An Open Design Chair

[post still under construction]

Addi is a chair made for Trikka! It follows the 3erlin Grid (Trikka grid). And Addi’s parts can be used for many different things – including alternate builds of Addi. In this post we show some pictures of Addi and also 3 alternate builds.

Addi is currently only available as a local make [LINK].

Addi:

Click on “design info” to get assembly instructions and more.

Construction close ups:

  • Assembly: Study the pictures above (click to enlarge) to see how the individual parts are assembled. Detailed information about all the parts can be found below in the Trikka info.
    You can use thin but strong material for the slats or make thicker legs. If you have thin material, you should use a longer cross beam (270mm) [LINK PARTS POST POSITION]. For thick legs we recommend the 210mm beam [LINK PARTS POST].
  • Fasteners (style): We mainly used fasteners we had in the workshop for these functional prototypes. A final aesthetic and production ready design would probably add some work here to find elegant and cheap solutions.
  • Fasteners (length): Since Trikka has a material tolerance [LINK TOLERANCE] and there is a lot of material stacked on top of each other here, it is clear that you first have to decide what material you are going to use before you buy your fasteners – the length of the bolts.
  • If your chair feels wobbly you can also add another cross beam in the front close to the bottom. (An example for this you can see at the bottom of this post).
  • Usually chairs have a curved backrest and a butt pattern in the seat to make it more comfortable to sit on. When you make Addi, you can achieve this too. For example, you can use thicker sheet material and mill curves into it (see picture below). You will still have a flat side at the bottom, of the part – so the part will also work in other Trikka designs.

backrest:

seat:

Is there anything missing? Do you have any questions? Send an email: hello@mifactori.de

Click on “Trikka info” below to get it:

…info will be added soon…

internal notes:

Parts (split it in fasteners and other parts)

Parts

  • Spacer [CATALOG]
  • 5 hole slat → Not part of this list
  • all other parts will be new here! Lots of fasteners.
  • Spacers (remark: make sure they have the correct thickness for the material you use.)

fasteners:

  • Add all M6 fasteners here and add a remark like this:
    > Fasteners (length): Since Trikka has a material tolerance [LINK TOLERANCE] and there is a lot of material stacked on top of each other here, it is clear that you first have to decide what material you are going to use before you buy your fasteners – the length of the bolts.

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Follow me down to meet some alternate builds ↓

Alt Build 1

This alt build uses uses fewer parts than Addi. It removes the 600mm backrest part [LINKG PARTS POST] and replaces it with a 420mm leg part and it replaces the backrest board [LINK PARTS POST] and uses another different seat board instead.

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Alt Build 2

This alt build has a different solution for the backrest. It uses a part [LINK 150mm PART PARTS POST] introduced by Bengi [LINK BENGI]. This makes the backrest adjustable for a comfortable or focus position.

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Alt Build 3

Info: Simply remove the backrest and you have a stool or a base for a side table. You can exchange the crossbars for longer ones and thus build the substructure for a bench.

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2023

Flickr album with high-res images