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Nebula dual-axis tracking assembly: star knob, spring and idler wheel, close-up, on black with a purple glow

Blog category

Maintenance and Productivity

Keep a 2×72 running true and your shop moving: checkups, alignment fixes, belt changes, dust collection, lighting, storage and a workflow that saves time.

36 articles · written in Sterling, Illinois

36 articles

Everything filed under Maintenance and Productivity

  • Torus aluminum 2x72 grinder frame with a horseshoe tool arm, four star knobs and a black cam lever, on a wood-grain backdrop
    2x72 Grinder Tips7 min read

    Sharpening Large Cleavers with Extended Work Rest

    A cleaver is wide, heavy and easy to rock, and a short rest lets the edge wander. Here is how I sharpen large cleavers on the 2×72 with an extended work rest: full support, angle setup, and safe handling.

  • Reverse angle of an aluminum work rest plate showing the black adjustment knob and hinge bracket
    2x72 Grinder Tips6 min read

    Crafting a Custom Tool Rest for Your 2×72 Grinder

    A tool rest is the difference between guessing an angle and repeating it. Here is how I design and build a custom rest for the 2×72, from steel thickness and arm mounting to squaring it to the platen.

  • Front-on photo of a Torus CNC 2x72 belt grinder with a P220 silicon carbide belt installed, shop banner behind it
    Knife Making7 min read

    Essential Safety Checklist for New Belt Grinder Users

    A 2×72 will take skin, hair or a fingertip without slowing down. Here is the safety checklist I give every first-time owner: eyes, lungs, hands, belt inspection, bolting the grinder down, spark direction and how to shut it down fast.

  • Torus Nebula grinder tilted horizontally, with its flat platen and three aluminum wheels exposed.
    2x72 Grinder Tips9 min read

    Perfecting Knife Spine Radiusing with the 2×72 Slack Belt

    A rounded spine feels better in the hand and looks finished, and the slack belt is the fastest way to get one. Here is how I radius a knife spine on the 2×72: grit, the rolling motion, and polish.

  • Toothed rubber drive wheel mounted on a Torus CNC 2x72 grinder tooling arm with warning stickers
    2x72 Grinder Tips7 min read

    Restoring a Worn Contact Wheel: A Step-by-Step Guide

    A contact wheel wears a groove, glazes over or loses its crown, and the grind goes with it. Here is how I assess a worn wheel, clean and re-face it, reinstall it true, and decide when to replace it.

  • Nebula close-up: four star knobs on clamp plates, arm bar and black cam lever, on black with a purple glow
    2x72 Grinder Tips7 min read

    Achieving Tiny Bevels with Zero Clearance Tool Rests

    Small bevels on thin stock are the easiest place to ruin a blade. A zero-clearance tool rest closes the gap so the edge cannot dip. Here is how I set one up and grind micro bevels that repeat.

  • Top wheel cup and quick-release pin lever on a Torus CNC 2x72 grinder tooling arm mount
    2x72 Grinder Tips6 min read

    Platen Length: Does Size Matter for Knife Makers?

    A longer platen supports a chef knife and keeps a flat grind flat. A shorter one gives control on small blades. Here is how platen length changes the grind, the trade-offs, and how to pick for the knives you make.

  • KB Genesis AC motor speed control box with forward/reverse switches and speed dial, top view
    2x72 Grinder Tips7 min read

    Mastering VFD Speed Control for Various Blade Steels

    Carbon steel, stainless, tool steel and damascus all grind differently, and a VFD lets you match belt speed to each. Here is how I set speed by steel on the 2×72, and why thin stainless wants slow.

  • Toothed rubber contact wheel on a mill-stamped aluminum shaft with multiple mounting holes
    2x72 Grinder Tips6 min read

    Installing Small-Wheel Attachment on Torus CNC Grinder

    The small wheel attachment opens up finger grooves, choils and inside curves. Here is how I install it on a Torus 2×72: power off, slide the arm in, set height, track the belt over the small wheel, test on scrap.

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Built in Sterling

The machines behind these notes

I machine the parts, hand-assemble, track and test each grinder before it ships. Most orders leave in seven to ten business days from time of order.

  • Nebula 2x72 grinder, front three-quarter view: aluminum arm, black plate, Safety Rules label, on black with a purple glow

    Nebula 2×72 Steel Belt Grinder

    My heaviest 2x72: a 3/8-inch steel chassis with machined dual-axis tracking. Bolt it down and it stays put.

    Starts at$1,295View
  • Small wheel attachment from above: holder fork, engraved aluminum arm and two rubber wheels, on black with a purple glow

    Small Wheel Attachment with 1.5″ Aluminum Tooling Arm

    Reaches the choils, finger grooves and inside curves a flat platen never will. Wheels from 1/2 to 1.5 inches.

    Starts at$289View
Rich Linville in the Torus CNC shop with a finished 2x72 belt grinder

Built to order

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I answer my own email. Tell me the work you do and which grinder you are considering.