Sharpy McSharpface - Hệ thống mài dao đối xứng chính xác

Sharpy McSharpface

Precision symmetrical sharpening system for consistent and repeatable, razor-sharp edges. Two rods leading sharpening stones are mounted on a trapezoid leading right-left screw for precise and symmetrical angle adjustment. All made from printable parts and easily obtainable non-printable parts.

Useful for most kitchen and EDC knives (no serrated blades)

Key benefits:

• Symmetric and precise angle management

• Guided sharpening stones for consistend bevels

• Compatible with Ruixin and KMFS sharpening stones

• Easily obtainable hardware parts

The stone holders are quite tolerant, but there are limits:

• max stone width is 23mm

• max length 162mm

• min thickness 7mm

What's included in STEP / STL files:

• All necessary construciton parts

• Boxes for stones to store in

• Tool box for additional tools

• Attachment for digital inclinometer

• Tightening knobs for knife fastening

• Small tool for installing sleeve bearings

What's not included:

• Right-left trapezoidal lead screw + nuts

• Various M3 screws for the construciton

• Square M3 nuts

• M6 screw and nut for knife fastening

• Smooth straight rods

• Steel backed PTFE sleeve bearing 5x7x10mm (but printable replacement part is available)

What to prepare:

• You will need PETG filament, preferably for all parts

• M3 screws of different lenghts (see parts table below)

• M3 square nuts (see parts table below for their number)

• One M6 screw and one M6 nut for knife fastening.

• Steel backed PTFE sleeve bearing 5x7x10 (see parts table for details)

• Right-left leading screw (see parts table below for details and link to store)

• Smooth straight rods (see parts table for specifications)

• Screwdriver matching your screws

• Pliers for easier square nuts placing

• Compatible sharpening stones (see parts table for details)

• Generic rubber band to be used with the Tools - Storage Tool

Printing recommendation:

• No suports should be needed

• 3 perimeters should be all right, 4 perimeters for Knife Holder

• 20% infill is reommended

• The parts are already oriented the intended way

I suggest to use parts with mouse ears (additional circles to be removed after print) when available, to make sure the warping will be under control. I added them to two parts, Knife Holder and Stone Holder - Base.

Assembly instructions:

See the exploded view image below the parts table for parts placement overview

available in "other files" for easy download. You can download it from photos as well, but Printables won't guide you for download, you myst right-click it for download.

For detailed assembly instructions, see the video at the bottom.

Parts table:

This parts list contains affiliate links for Amazon. If you purchase through these links, I may earn a commission. This does not increase the price you pay.

Part name

/ Details

Quantity

Where to buy

M3x8

8

Amazon:

https://amzn.to/4uLQzH1

M3x10

14

Amazon:

https://amzn.to/4uLQzH1

M3x12

4

Amazon:

https://amzn.to/4t4uIcm

M6x25 Hex

1

Amazon:

https://amzn.to/4t4uIcm

M6 Lowprofile nut

(or regular)

1

Amazon:

https://amzn.to/4lMEQUB

Heat insert
M3x4

4

Amazon:

https://amzn.to/4lP8gkY

M3 Square nuts

DIN562

22

Amazon:

https://amzn.to/4cixvcD

T8 8mm Trapezoidal Lead Screw Rod Right-Left Thread Lead 2mm - 300mm length

With Brass Nuts.

You can have shorter or longer screw. The longer it is, the higher angle you can set the stones to. With 300mm, the limit is somewhere around 35°

1

Amazon:

https://amzn.to/4rIx148

Smooth 5mm diameter steel rod. Length 300mm

Chamfered on both ends

2

Amazon:

https://amzn.to/4bKBrTq

Neodymium magnets 10x4x2mm

Used for Stone Storage Boxes (8 magnets) and Tool Box (4 magnets)

depends

Aliexpress:

https://www.aliexpress.com/item/1005011567787167.html

Amazon DE:

https://www.amazon.de/Neodymium-Magnets-Rectangular-Magnetic-Postcard/dp/B0D6RQ7YM4

Unimagnet (CZ):

https://www.unimagnet.cz/neodymovy-magnet-kvadr-10-4-2-mm-n52-sila-940-g_z1153/

Orodian (CZ):

https://orodian.cz/magnet/kvadr-10x4x2/

Steel backed PTFE sleeve bearing 5x7x10mm

There is a printable replacement part that works great, Stone Holder - Sleeve Bearing.stl / stp

5mm inner diameter, 7mm outer diameter, 10mm length (can be shorter)

4

Amazon:

https://amzn.to/4kqpAMj

Prumex (CZ):

https://www.prumex.cz/cn-ku-0510-pouzdro-kluzne-ocel-ptfe-pb/

Sharpening stones

• max stone width is 23mm

• max length 162mm

• min thickness 7mm

Search for Ruixin or KMFS stones. Be careful with dimensions, some might have too low base (take 5mm and more). Aluminium bases tend to be too wide

in pairs

Diamond stones

Amazon:

https://amzn.to/4agccat

https://amzn.to/4bKy1jo

This parts list contains affiliate links for Amazon. If you purchase through these links, I may earn a commission. This does not increase the price you pay.

As an Amazon Associate I earn from qualifying purchases.

Parts map - Exploded view:

How to assemble (Video):

How to use (Video):