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All the useful info I've gathered regarding the info for making a Shogi-ban and koma.
This is a related question in boardgames.stackexchange.com:
http://boardgames.stackexchange.com/q/10836/4779
===============================================================================
The measurements for the board:
Length . 33.66cm
Width .. 33.33cm
Height . 30.3mm
Measurements for the squares in the board:
Length . 36mm
Width .. 33mm
===============================================================================
The amount of pieces that I will manufacture:
King ........... 2
Rook ........... 2
Bishop ......... 2
Gold General ... 4
Silver General . 4
Knight ......... 4
Lance .......... 4
Pawn ........... 19
===============================================================================
The exact measurements for each piece.
Measurements provided in this order:
Height, width (bottom), thickness, angle (general, bottom > top),
angle (thickness, bottom > top).
King ......................... 32mm 28.7mm 9.7mm 81° 85°
Rook, Bishop ................. 31mm 27.7mm 9.3mm 81° 85°
Gold General, Silver General . 30mm 26.7mm 8.8mm 81° 85°
Knight ....................... 29mm 25.5mm 8.3mm 81° 85°
Lance ........................ 28mm 23.5mm 8.0mm 81° 85°
Pawn ......................... 27mm 22.5mm 7.75mm 81° 85°
@jtwebb
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jtwebb commented Feb 2, 2014

This is an awesome list. Thanks for sharing!

One question, did you ever figure out at what angle or height the "tip" of the piece is? I see that the general angle along the side is 81 degrees, but at a certain point, that angle changes to meet together at the top of the piece. Do you know what the general rules for that is?

If that isn't very clear, please let me know and I will elaborate. Thanks!

@greduan
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greduan commented Nov 10, 2014

@jtwebb

but at a certain point, that angle changes to meet together at the top of the piece

I think that's the second angle I put there. I'm not sure.

@sehrgut
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sehrgut commented Jan 12, 2016

I've not found dimensions for the komadai, but they seem to have a flat surface about 3 spaces long, square (e.g. for your measurements, 108mm), with some further extension of the edge around that, beveled or routed. Height-wise, they seem to come either flush with the board, or no more than a couple piece-thicknesses below the surface of the board, but never above the board.

@CouchTomato87
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I'm confused... I feel like this is not enough information to describe a piece. What is this bottom to top angle? It shouldn't be bottom to top, because that's not an actual line. What you'd need is bottom to roof (but not apex) angle, and then how long that is. Unfortunately, I can create an infinite number of pentagons with these numbers...

@biza-1
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biza-1 commented Apr 22, 2020

I found out that middle angle is 117° and the tip angle is 144°.
source: https://www.i-tsu-tsu.co.jp/en/blog/shogi/864

@roccobe
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roccobe commented Mar 5, 2021

given a board is 9 by 9 and a square is 33mm x 36mm, you end up with 297mm x 324mm (+ edge) for the board.
That gives a 27 mm difference in width/height of the board whatever size you make the edge around the grid.

As all of the pictures of Shogi boards I've seen indicate that this edge is (almost) equally wide on the sides and top/bottom, the given square dimensions of 33, 33 cm on 33,66 cm seem incorrect as this is a 3 mm difference instead of the calculated 27 mm

Watching one of the Youtube video's you listed (https://www.youtube.com/watch?v=h9zb5udfeWo) it's mentioned that the dimensions are 12 sun on 11 sun. As a "sun" is an old Japanese scale unit that corresponds with 3,03 cm, you would end up with a dimension of 33,33 cm on 36,36 cm

@zozobalogh0817
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zozobalogh0817 commented Sep 6, 2022

Information about the game itself, and also the resource of a lot of used pictures

Thank you all out there who helped this gist! You are the faithful guardian of the republic 🤞🌌

context

Type Amount Height (B) Width (A) Thickness (C) [α] Angle [β] Angle [γ] Angle Steps Picture (with symbol)
King 2 32mm 28.7mm 9.7mm 81° 117° 85° king_steps the_king_real_life_picture
Rook 2 31mm 27.7mm 9.3mm 81° 117° 85° rook_steps the_rook_real_life_picture
Bishop 2 31mm 27.7mm 9.3mm 81° 117° 85° bishop_steps the_bishop_real_life_picture
Gold General 4 30mm 26.7mm 8.8mm 81° 117° 85° gold_general_steps the_gold_general_real_life_picture
Silver General 4 30mm 26.7mm 8.8mm 81° 117° 85° silver_general_steps the_silver_general_real_life_picture
Knight 4 29mm 25.5mm 8.3mm 81° 117° 85° knight_steps the_knight_real_life_picture
Lance 4 28mm 23.5mm 8.0mm 81° 117° 85° lance_steps the_lance_real_life_picture
Pawn 19 27mm 22.5mm 7.75mm 81° 117° 85° pawn_steps the_pawn_real_life_picture

Also list for promoted pieces if you wish to make them

Type Amount Height (B) Width (A) Thickness (C) [α] Angle [β] Angle [γ] Angle Steps Picture (with symbol)
The dragon king (Promoted Rook) 2 31mm 27.7mm 9.3mm 81° 117° 85° the_dragon_king_steps the_dragon_king_real_life_picture
The dragon horse (Promoted Bishop) 2 31mm 27.7mm 9.3mm 81° 117° 85° the_dragon_horse_steps the_dragon_horse_real_life_picture
The promoted silver 4 30mm 26.7mm 8.8mm 81° 117° 85° promoted_silver_steps the_promoted_silver_real_life_picture
The promoted knight 4 29mm 25.5mm 8.3mm 81° 117° 85° promoted_knight the_promoted_knight_real_life_picture
The promoted lance 4 28mm 23.5mm 8.0mm 81° 117° 85° promoted_lance_steps the_promoted_lance_real_life_picture
The promoted pawn 19 27mm 22.5mm 7.75mm 81° 117° 85° promoted_pawn_steps the_promoted_pawn_real_life_picture

Board

Measurements

The measurements for the board and squares on the board:

Length Width Height
Board 33.66cm 33.33cm 30.3mm
Squares 36mm 33mm -

The board structure

It's 9x9 squares available for players to move

9 8 7 6 5 4 3 2 1  
                  1
                  2
                  3
                4
                  5
                  6
                  7
                  8
                  9

@greduan
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greduan commented Sep 15, 2022

Woah bro. That is next level.

Your efforts will not go without reward from the universe 🙏

@zozobalogh0817
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I hope I helped you out a little!

If anyone makes the set by this gist please post it below here! It would be nice to see your work (I will post mine to it's just under process 😃)

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