Plans = Rough cut/assembly instructions, that will differ with a persons measurements

Plans shared, intended for show/display use

Non-complicated variant, The Sendai Do, Intended for use in the field (Often/Harshly), Easy to Maintain

The "show" variant is "laced" (if you have tried to find this, you likely found it 1st), and is popular because "museum" examples are typically the "laced style" (ceremonial) see article/link below

Plywood is in fact a type of Lamellar (layered paper/wood)

Wooden sections best formed = Soaked/Boiled then bent & HOT dried weighted/clamped

• this is VERY difficult to achieve in a non-specific setup shop (production artisan/industrial)

WOOD DOES NOT STRECH (it tears), it only warps or COMPRESSES under WET HEAT

Asian Lamellar Plate Armor, (more for Ashigaru, rich peasants, than for Samurai, poor knights)

• Generally used with a gambeson (under padded clothes)
• Inferior to European Plate Armors in penetrative protection
• BUT is way lighter, cheaper, and easier to make/use
• plus IT DOES NOT BEND/DEFORM (wont cave into your chest), but can splinter shatter
• "Shaped", Its highly effective against projectiles under 1000fps (light arrows/bolts glance off)
• It is paired with a heavy boot and wooden shin/calf wrap (in English "Greaves")

This is the "good set", that is used in battle, not for show.

Can be donned/doffed by wearer without assistance (if awkwardly)

Well made, these deflected watered steel blades in glancing blows (steel would not stop folded/watered steel in a direct blow). Nor will it stop a direct arrow, or heavy bolt/lead shot

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Strength

Is your work table top 1-1/4" Grade A Hardwood/Tropical Marine/Aircraft Plywood?

• If so... what kind of punishment can it take? food for thought!
• I'm guessing nothing short of a drill/saw, or full strength sledge hammer, does more than scuff it
• To every action there is always opposed an equal reaction > In a collision between two objects, both objects experience forces that are equal in magnitude and opposite in direction. (if your struck, forces WILL transfer to YOU). You are the point of ground/gravity (and will fly)

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Literally: Under Cloak Cuirass & Petal Scale Apron, made in the Sendai style

Yukinoshita Do = "Under/Below" "Snow" "Cuirass"

&

Kanagu Mawar = "Rose" "Fittings"

&

Yoroi = "Armor"

&

Sendai = (in this use) "In the style of construction found in the region of Sendai"

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You are looking for "The Sendai Do"

Note: Linked Do instructions are VERY detailed, and "long winded"

Wooden, suggested 1-1/4" Marine (Hardwood) Plywood,

Do sections best formed = Soaked/Boiled then bent and dried weighted/clamped

WOOD DOES NOT STRECH (it tears), it only warps or COMPRESSES under WET HEAT

• The Do itself ("Yukinoshita Do" type The Sendai Do)
• Its beautifully simple, effective and a 3000 year tested design (Alexander, The Great, wore lamellar in the eastern campaigns)
• The shoulder straps have pauldron's added (the armor on shoulder section)
• "locked" with a pin (or door bolt in our case)

European "Lend Name" = "Four Hinged/Five Fold Cuirass"

Yukinoshita Do, finished crimson and brass flashed

easier to read/visualize diagram (no Japanese words):

• less "extended raisers/flaring" than IRL pic

https://preview.redd.it/5ui6exhxvvsa1.png?width=439&format=png&auto=webp&s=a29bf9671d78902ad5b5820ee26be15dc4afa251

Need piano hinges, "bending" the plywood is optional, but will improve fit

• The Thigh Skirt Addon ("Yoroi Kanagu Mawar")
• 4 and 6 sections are the most popular (but 5 & 7 also exist), greater is "clutter/flash"
• ADVANCED: the 5 "petal chains" each hang from the 5-sections of cuirass, from hinges/rivets
• Intended to end/stop, roughly 1" below the knee fold of the leg, scale meeting greaves

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Kanagu Mawar finished black and brass flashed (lace hung, not the BETTER hinge/rivet)