Full Ruckus Design
Hat Block (#81 regular oval)
Hat Block (#81 regular oval)
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#81 Hat Block
Our hat blocks are made to order, so please allow 5–7 business days for processing before shipping. Need yours sooner? Contact us to discuss availability, or browse our Misfits section for in-stock blocks!
Our #81 Hat Block is designed for milliners and hat makers looking for a classic tapered crown profile for shaping, blocking, and forming hats.
Each block is 3D printed for consistency and is available in multiple sizes to suit a wide range of hat-making projects.
⚠️ IMPORTANT SIZING INFORMATION
Our hat blocks are made TRUE TO SIZE.
The listed size is the actual circumference of the hat block.
YOU MUST ORDER ONE SIZE LARGER THAN YOUR FINISHED HAT SIZE TO ALLOW ROOM FOR THE SWEATBAND.
For example:
If you are making a finished 58 cm hat, order a 59 cm hat block.
The extra size provides the necessary allowance for the sweatband and helps prevent the finished hat from fitting too tightly.
#81 Crown Profile
The #81 features a traditional tapered crown shape that provides a versatile starting point for a variety of hat styles.
Its clean, balanced profile makes it suitable for both traditional and custom hat designs, giving the hat maker plenty of flexibility during shaping and finishing.
Choosing Your Size
Measure the intended finished head size, then select the next size larger.
Finished Hat Size → Recommended Block Size
57 cm finished hat → 58 cm block
58 cm finished hat → 59 cm block
59 cm finished hat → 60 cm block
60 cm finished hat → 61 cm block
Construction
Our hat blocks are 3D printed for accuracy and consistency and are designed for use with traditional hat-making and blocking techniques.
Because our blocks are made true to the listed size, we do not automatically add extra circumference for sweatbands, liners, or other finishing materials.
This allows the hat maker to select the proper amount of sizing allowance for their project.
Returns & Incorrect Size Orders
Please carefully check your size and block style before placing your order.
Because our hat blocks are made true to size, it is the buyer's responsibility to select the correct size and to order one size larger to allow for the sweatband.
Returns resulting from an incorrect size or style being ordered by the customer are subject to a $10 return fee.
If you are unsure which size to order, please contact us before purchasing. We are happy to help determine the best size for your project.
⚠️ PLEASE READ BEFORE ORDERING
Our hat blocks are TRUE TO SIZE.
Order ONE SIZE LARGER than your intended finished hat size to allow for the sweatband.
Example: 58 cm finished hat = Order a 59 cm block.
🎨 Mystery Color Option
Feeling adventurous? Choose Mystery Color and let us pick the color of your hat block!
Instead of our standard black, your block may arrive in a fun color, color combination, or unique filament we have available in the shop. Colors are selected at random and may vary from block to block.
Perfect for makers who don’t care what color their tools are and want something a little different on the workbench.
Please note:
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Color selection is completely random.
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Specific colors cannot be requested with this option.
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Photos are examples only.
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The color does not affect the size, shape, or function of the hat block.
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Depending on available material, some blocks may feature multiple colors.
Every Mystery Color block is still printed to the same standards as our regular hat blocks.








