During the wallet-making process, there are situations where a "flatbed sewing machine"—used to sew flat pieces together—is not sufficient. Especially for items with complex structures, such as mini wallets or slim wallets, an industrial sewing machine known as an "arm sewing machine" plays a significant role in determining the final finish.
■ Why Are Arm Sewing Machines Necessary?
Arm sewing machines have a unique design featuring a narrow, cylindrical base. This structure enables sewing tasks that are difficult to perform with a standard flatbed sewing machine.
・Easy to sew three-dimensional
parts ・Allows work while avoiding interference points
・Can sew straight lines even with complex structures
This difference is particularly critical for compact and mini wallets, directly affecting the final finish.
■ Why It’s Important to Finish the “Edge” of a Thin Wallet Neatly
The final edge (edge stitching) determines the appearance and quality of the wallet.
With the twin card pocket structure found in Tenuis 3rd generation and later models,
・You must sew while avoiding the card
pockets・The entire product is prone to warping・It is difficult
to sew in a straight line
These “physical constraints” exist.
■ Why It’s Difficult with a Flatbed Sewing Machine
When using a standard flatbed sewing machine,
・The product is pulled
diagonally・The stitching may become
misaligned・This affects the finished product
Especially with slim wallets and mini wallets, this misalignment directly affects the quality.
■ How an arm sewing machine solves this
Since there is open space to the left of the needle on an arm sewing machine,
・You can avoid obstructions・You can
sew without forcing the
product to bend・You can achieve stable sewing
This design enables highly precise edge stitching.
■ Sewing That Requires Skill
While overlock machines are convenient,
・ Since there is no base, you must support it
with your hands・ It takes practice to
stabilize it・ It requires the skill of a craftsman
It is not a tool that anyone can easily handle.
■ Tools Support Quality
Hand-held sewing machines are essential equipment used in leather crafting and bag making.
・Handling complex
structures・Consistent sewing
precision・High-quality finishes
These factors contribute to the sense of reliability in the final product.
■ View Products
You can view products that utilize these sewing techniques in our catalog.
Product List
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