Stool-T is constructed of many blocks, which are bound by small parts, and can be re-constructed into other patterns, similar to playing "Tetris". Each block shape is the same as the seven seen in "Tetris": I shape, J shape, L shape, O shape, S shape, Z shape, and T shape.
This was designed as an entry for the "Tenkaizu Budokai stool contest”.
- base materials: maximum of 2 sheets of MDF t2.5mm - 1820 × 910mm can be used (according to the contest rule)
- tools: laser cutting machine (trotec speedy 300)
blocks desing / Rhinoceros + Grasshopper > Illustrator
binding parts desing / Rhinoceros > Illustrator
Because of the limitation for the base materials, the unit size for blocks is set as 4cm. It is scalable via Grasshopper parameters. Bigger and/or more blocks shall be much more interesting.
One base material is cut into four max-work-size sheets (730 x 437mm) and one sheet of 730 x 179mm, referred to as a "hazaiA sheet".
For this stool, the following number of sheets are cut according to the attached drawings.
stool-T_A.pdf ; 4 max-work-size sheets
stool-T_B.pdf ; 2 max-work-size sheets
stool-T_C.pdf ; 1 max-work-size sheet
stool-T_hazaiA1.pdf ; 1 hazaiA sheet
stool-T_hazaiA2.pdf ; 1 hazaiA sheet
The following are optional parts. They are used for the backside cover if you want to store any remaining blocks inside the stool.
stool-T_A_waku.pdf ; 1 remaining material of stool-T_A.pdf
stool-T_C_waku.pdf ; 1 remaining material of stool-T_C.pdf
The parts list is attached just as a reminder for myself (Japanese only): "stool-T_PartsList_0926.pdf"
Step 1: Assemble Blocks
Attached laser-cutter data is layouted for assembling 63 blocks with 7 tetlis block shapes.
Stool-T explaining on this instructables is composed of W 7 x D 7 x H 7 basic cubes ( basic cube is 4cm size). Each tetlis block is composed of 4 basic cubes. So it means that minimum 48 tetlis blocks is required to assemble Stool-T ( 48 = 48.25 = (6x6x4+7x7)/4 ).
Step 2: Cut Binding Parts
many many binding parts are also cut.
#1: long parts, supporting member under top surface blocks of Stool.
#2: long parts, binding member of side wall blocks
#3: overlocking parts of #2 on side walls blocks
#4: overlocking parts of #1 under top surface blocks
Step 3: Construct Side Walls
construct four side walls with binding parts #2 and #3.
Step 4: Construct Two Walls
construct two walls with binding parts #2 and #3.
Step 5: Construct Third Wall
Before constructing third wall, binding parts #1 are inserted into the holes of top blocks, then construct third wall.
Step 6: Complet Side Wall and Top
construct fourth wall to complete side wall. Top blocks are bound with the binding parts #4.
Bottom cover is optional. They are used for the backside cover if you want to store any remaining blocks inside the stool. Two bottom covers are inserted between binding parts #2 and #3.
Now, Stool is completed !
Step 7: Enjoy Re-assembling Like Tetlis
All blocks of Stool-T are assembled with binding parts, not permanently fixed, to re-assemble as another pattern. To be honest, disassembling and re-assembling is not easy, but it is possible. It's the basic idea of Stool-T.
I planed several patterns using Excel work sheet. Just for your reference, attached is one of the plan, sorry in Japanese, but you can understand what is this table.
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