Adjustable Multi-Angle Grinding Jig for Hobbyist Metalworkers/Knifemakers

Product/Service Opportunity: Multi-Angle Grinding Jig for Hobbyists

User Need Indication: The user "1l2v5jv" shared their "First Try Bevel/Angle Grinding Jig" and is looking for constructive input. Another commenter mentioned creating a similar DIY jig. This shows that hobbyists need a tool to help them achieve precise angles during grinding, especially for tasks like beveling knives or tools. They are currently relying on DIY solutions, which suggests there's a gap in the market for an accessible, well-designed commercial product.

Specific Product Suggestion: A commercially available, robust, and easily adjustable multi-angle grinding jig designed for hobbyist knifemakers, woodworkers (for sharpening tools), and metalworkers.

Key Features:

  • Durable Construction: Made from machined aluminum or steel for longevity and stability.
  • Precise Angle Adjustment: Incorporates a protractor-based system or a fine-threaded adjustment mechanism, allowing for a wide range of angles (e.g., 10° to 45° or more) with clear markings and a locking mechanism.
  • Pre-set Common Angles: Could include detents or quick-set positions for common bevel angles (e.g., 15°, 20°, 22.5°, 25°) for knifemaking or tool sharpening.
  • Secure Workpiece Clamping: A versatile clamping system (e.g., toggle clamps, screw clamps) capable of securely holding various sizes and shapes of knife blanks, chisels, or small metal parts.
  • Stable Base & Compatibility: Designed with a stable base that can be clamped to a workbench or directly aligned with common bench grinders or belt sanders/grinders.
  • Ease of Use: Intuitive design for quick setup, angle adjustment, and workpiece insertion/removal.
  • Safety Considerations: Ensures the workpiece is held firmly, reducing the risk of slips during grinding.

Expected Benefits & Value Proposition:

  • Improved Precision & Consistency: Helps users achieve accurate and repeatable angles for bevels and edges, leading to higher quality finished products and less reliance on freehand skill, which can be tough to master.
  • Time Savings: Reduces the time spent setting up makeshift jigs or trying to achieve angles by eye, making the workflow more efficient.
  • Reduced Material Waste: Minimizes errors and ruined workpieces due to incorrect grinding angles.
  • Enhanced Skill Development: Helps beginners and intermediate users achieve professional-level results more quickly, building confidence and enjoyment in their craft.
  • Versatility: A single jig can cater to various grinding needs beyond just one specific angle or workpiece type.
  • Affordability: Positioned as a step-up from DIY solutions but more accessible than high-end professional industrial jigs. Estimated price point: $75 - $150.

Anticipated Market & Revenue: The target market includes a growing community of hobbyist knifemakers, DIY enthusiasts, woodworkers, and small-scale metal fabricators. Given the active online communities discussing such tools and DIY solutions, a well-marketed product could achieve significant sales. Assuming a conservative estimate of 1,000 units sold in the first year at an average price of $100, potential revenue could be around $100,000, with opportunities for accessories or premium versions in the future.

Origin Reddit Post

r/knifemaking

First Try Bevel/Angle Grinding Jig

Posted by u/Reasintper06/04/2025
Trying an experiment. Looking for constructive input. I picked a few angles that make some sense and put a bottom shelf of hardboard. I am not 100% on the clamp but it s

Top Comments

u/Reasintper
I am working on very small knives. Holes in the tang might not be a good option.
u/Reasintper
Perhaps you might consider trying a jig. https://preview.redd.it/h32u0ku3vx4f1.jpeg?width=3072&format=pjpg&auto=webp&s=610e9e7fdd7d1065417326da415062062e6ee477
u/superdavy
Hey. I’m just learning to but did something similar after research all sorts of jigs. I took a 2x4 and cut an angle on the bottom. Then drilled two holes in tang and just screwed it to the 2x
u/Reasintper
Pictures or it didn't happen :)
u/Sir_Toccoa
Haha I will post some. I making a second attempt tonight.
u/Sir_Toccoa
That does help. Is it better, or easier, to start at a lower angle and work your way toward the edge, or start with a higher angle and work your way toward the spine?
u/Reasintper
So when Nic Westerman does his "turning sloyd" he does a double grind instead of scandi. He does 4 first then 25 (12.5). I am a fan of 26° for carving tools so I did 13 instead of 12.5. 10°
u/Sir_Toccoa
So, I tried making the jig tonight. It turned out alright, but I think I made it too short. I need it a bit longer to get lower angles.
u/Kozzai
I have the hardest time with bevels. I’ve just accepted that and decided to experiment with rougher edges for a more rustic look.
u/superdavy
Hey. I’m just learning to but did something similar after research all sorts of jigs. I took a 2x4 and cut an angle on the bottom. Then drilled two holes in tang and just screwed it to the 2x
u/Sir_Toccoa
I see you did 13°, 10°, and 4°. Do you think these are good increments? I plan to do something similar to what you’ve done here, but not sure what angles are needed for bevels.
u/Reasintper
Probably depends on your goal and the phase of the project. What you might do on a double bevel knife is make the first bevel leaving the edge itself blunt. Then heat treat, temper and then

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