Description
The SL Stone Holder is an attachment designed to make knife blade bevel polishing Suck Less! This tool adapter helps your reciprocating saw hold a mold polishing stone, transforming it into a powerful polisher that significantly reduces the time and effort needed for hand sanding your blades.
Key Features:
- Durable Construction: Made from 3D printed PLA and 304 stainless steel. Â These parts have been designed to maximize the strength needed for polishing out stray grinding scratches.
- Stone Size: Holds 1/2″ wide stones up to 3/8″ thick, with 1/4″ thick stones working best from my testing.
- Large Stone Holder: Sized for stones that are 1.5″ to 3″ in length. Longer stones have been used in this holder with success. Â These longer stones have been ones 1/4″ thick.
- Short Stone Holder: Sized for stones that are 0.75″ to 1.5″. Â Longer 1/4″ thick stones have also been used in this holder too.
- Universal Fit: Designed for smaller compact reciprocating saws but compatible with most standard models. Some saws with longer strokes may require guard removal that usually unscrews or is easily removed.
- Easy Installation: Quick and simple to attach, allowing you to switch between grits with minimal effort. Â The metal adapter has been sized the same as standard reciprocating saw blades.
- Precision Polishing: Designed to hold mold polishing stones firmly in place, helping to provide consistent scratch patterns during bevel polishing.
- Time-Saving Efficiency: Reduces hand sanding time by efficiently polishing knife blade bevels, enhancing productivity and saving valuable workshop time. Â Reciprocating saws are around 6000 strokes per minute, much faster than one can do by hand.
Whether you’re a professional knife maker or a hobbyist, the SL Stone Holder is the perfect addition to your toolkit. Achieve smooth, polished bevels that can be quickly sanded with the paper of your choice for a uniform satin blade. Upgrade your knife polishing process with the SL Stone Holder and experience the difference in speed and help hand sanding Suck Less!
Prepping Stones for Use:
Standard mold polishing stones come in 6″ lengths. Â The SL stone holder has be designed so that the stone can be cut in half for easier use when using tools. Â For cutting, I have fund the easiest is to use a small chisel and score a line win the middle of the stone and then place the chisel on the line and give a quick tap with a hammer.
Acknowledgments:
Special thanks to Manny Gutierrez from Parable Knives and Jake Hintze of Hintze Custom Knives for their inspiration and testing.
Notes / Resources:
- Polishing stones do not come with holder set unless ordered with them.
- Reciprocating saw does not come with set.
- Testing was mainly done with Milwaukee Hackzall M18 and M12 Tools
- Stones need to be used with a fluid of some kind. Â I have used all of these with success.
- Gesswein Supreme Green Stoning Oil – 1 Pint – My Preferred Oil with Moldmaker Plus Stones
- Norton Knife Sharpener Stone Oil – Amazon Affiliate Link
- WD-40 Multi-Use Product Non-Aerosol Trigger Pro, 20 OZ – Amazon Affiliate LinkÂ
- Wolf Honing Master Honing Fluid and Stone Cleaner – Amazon Affiliate Link
- Trend Diamond Abrasive Lapping Fluid – Amazon Affiliate LinkÂ
- Always wear appropriate safety gear when using power tools.
- All screws use 1/8″ hex key to tighten them.


























