SKU: 87658912899

TSPROF K4 Sharpening System

Sale price$758.23 Regular price$842.48
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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22

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Description

TSPROF K4 Sharpening SystemHighlights Most sophisticated & innovative sharpener in the TSPROF line. Ultraprecise angle control: Rough, fine & ultrafine adjustments. Builtin Axicube Shift electronic angle finder with quickdetach rail & magnet mounting. Quick clamps that provide 300 N clamping force. Detachable clamping arm: inspect edge under microscope without losing angle settings. Description TSPROF K4 is engineered for those seeking the highest precision in knife sharpening.

Highlights
  • Most sophisticated & innovative sharpener in the TSPROF line.
  • Ultra‐precise angle control: Rough, fine & ultra‐fine adjustments.
  • Built‐in Axicube Shift electronic angle finder with quick‐detach rail & magnet mounting.
  • Quick clamps that provide 300 N clamping force.
  • Detachable clamping arm: inspect edge under microscope without losing angle settings.
Description

TSPROF K4 is engineered for those seeking the highest precision in knife sharpening. The system combines advanced mechanics with ease of use. Key features include:

  • Three‐stage angle adjustment:
    1. Rough adjustment (±1° accuracy) via an extendable slider.
    2. Fine adjustment (±0.1°) using rack & pinion mechanism.
    3. Ultra‐fine micro adjustment (±0.01°) ideal for finishing & fine abrasives.
  • Angle range from 9° to 39.5° per side, accommodates large blades (up to 430 mm / ~17") in length.
  • Strong and stable structure: stainless steel + brass moving parts; robust base, designed for minimal deflection even under load.
  • Tool includes a thickness compensator for switching abrasives without losing the angle setting.
Starter Kit Inclusions
  • TSPROF К4 body with integrated base
  • TSPROF abrasive holder with detachable electronic angle finder Axicube Shift
  • TSPROF Quick clamps, black - 2 pcs.
  • Spare parts
  • Packaging: hard case with a foam insert
Specifications
Sharpening angle 9° – 39.5° per side
Knife length up to 430 mm / 17" in.
Angle setting precision up to 0.01°
Abrasive length up to 210 mm / 8.3" in.
Knife spine thickness 1 – 7 mm / 0.04" – 0.28" in.
Clamping force up to 300 N
Sharpener weight 5.85 kg / 12.9 lbs
Base weight 2.95 kg / 6.5 lbs
Angle adjustment levels 3 (rough, fine, ultra-fine)
Moving parts materials stainless steel, brass
Angle finder charging USB Type-C
Component Breakdown
  • Turning mechanism: Allows only 0.1° of arm deflection at a force of 30N. Ability to fully lock the flip will be useful during the reprofiling of the knife when it is subjected to heavy loads and vibrations, as well as when sharpening particularly long blades, when additional protection against accidental flipping is needed.
  • Three-stage angle adjustment:
    - rough adjustment (accuracy up to 1°) with an extendable slider;
    - fine adjustment (up to 0.1°) with a rack and pinion mechanism;
    - ultra-fine adjustment (up to 0.01°) with the micro-adjustment unit.
  • The arrangement of the sharpening system parts allows you to set the sharpening angle in the range from 9° to 39.5° per side, for knives up to 430 mm in length.
  • Thickness compensator: Height adjuster is equipped with a removable stone thickness compensator. It provides a quick adjustment of the angle during stone change.
  • Abrasive holder: Provides increased mounting security and ensures immobility of the elements during operation. Instead of point locking with a screw, the mechanism now uses surface locking through cylindrical sleeves with holes. This reduces the force required to secure the elements and eliminates the possibility of the rod surface damage.
  • Rod parking: K4 carries over the stroke limiter and L-shaped piece from the K03, while introducing an upgraded parking system.
  • New detachable Axicube Shift: Axicube Shift sits on the far abrasive stop. It can be quickly and easily removed to reduce abrasive weight during sharpening and for easy charging away from the sharpening system. The new mounting, featuring a special rail in combination with a locking screw and a magnet, provides an easy and secure attachment of the angle finder for accurate measurement of the sharpening angle. Axicube-i can be charged via USB Type-C cable.
  • Quick clamps: Can securely hold knives up to 7 mm thick. They provide a fast and tool-free usage and a 300 N clamping force. Designed with finite element analysis, the clamps' structure evenly distributes stress for uniform jaw closure.
  • Removable clamping arm: The new removable design of the clamping arm will become your favorite feature of the K4. No need to take the knife out of the clamps or try and repeat its position and set the same sharpening angle anymore.
  • Rigid body and stable base: It attaches to the milled base with three rigid quick-release screws. Thanks to its shape, weight, and wide, slim shock absorbers, the system remains stable during sharpening.
Manual

Video

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 87658912899

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4.3 ★★★★★
Based on 6 reviews
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Product Reviews
J
Verified Purchase
James E Morris
Chelsea, US
★★★★★ 5
Not expensive
Gets the job done
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
S
Verified Purchase
steven f
Grantham, US
★★★★★ 1
Initially defective poor quality
This item was initially defective and I needed one so I ordered another thinking it was a fluke. Both devices would not turn on. The second one briefly turned on for about 30 seconds and died. The major inconveniences that I can't return it in the normal way. I have to bring it to UPS and there isn't one near my house. I am very disappointed with this item and also with the return policy
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Reviewed in the United States on June 8, 2026
J
Verified Purchase
JudeBlack
Los Angeles, US
★★★★★ 5
Came in skeptical, but it's GREAT!
I read all the bad reviews I could on this thing and considered it an acceptable risk considering the price. Assembly was easy and the instructions were fair. Not amazing, but once you handle the edger, the gist is clear. I was skeptical overall that the horsepower and plastic guard weren't going to be enough. I ran it for nearly 45min stopping every 5 or so to check the blade and guard. It stayed tight and I was able to manually turn the blade to make sure it was working right. My front yard and sidewalk have been neglected for a few years. I would sometimes edge it out with the weed Wacker, but couldn't get it as clean as I wanted without breaking a LOT of line. When I was done, I noticed the guard had a lot of soil and grass buildup that I was able to take out easily with my fingers. There were a few times I scraped the sidewalk edge, but the blade is still solid and ready for more! I was surprised at the quality and as you're going over an area, it feels solid and not squirly or out of control. My uses are going to be mostly suburban maintenance on my own yard. If I had more land or something bigger, I would consider something larger. For my yard and purposes, this edger is going to work just fine! Did not notice any issues with the blade getting loose, but stayed aware of it. There is a lock nut that keeps it in place. I imagine over time and switching blades, this is going to lose its locking function, but I already see amazon has replacement blades that come with new lock nuts!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2025
S
Verified Purchase
Sherid94
Lexington, US
★★★★★ 5
Works great, easy assembly and no issues!
Using the weedeater for edging was too hard, so I purchased this. It works great! It was easy to assemble and easy to use. My lines are perfect, but the size, durability, and power of this gem get the job done, and it's lightweight enough that I can easily maneuver it around the yard. I chose a corded one so I don't have to deal with battery life or charging.
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Reviewed in the United States on September 26, 2025
N
Verified Purchase
Nancy Dobbs
Carnegie, US
★★★★★ 5
Easy to handle
Style: Lawn Edger w/(1) 4.0 Ah Battery
This is fantastic. It was a breeze to put together, the battery lasts a good 45 minutes or more, it is easy to handle, and does a terrific job of edging the concrete driveway. the roadside curb, and the borders of my flower beds. It is not too heavy and has loads of power. I am a 5'1" woman 81 years old and this tool is very easy for me to use and carry. The size is not too long even for me to maneuver. It is easy to lean if you get clumps of dirt in the housing for the blade and it is adjustable to suit the depth needed at the time. It seems very well made. The price was reasonable and I think we may be friends for quite a whole.
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Reviewed in the United States on July 29, 2025

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