3-Pack Tension Knobs, 5/16-18, for Torus CNC Grinders
Three machined 6061 knobs on 5/16-18 rod. Spares for the one that walks off the bench.
$39
Gift guide · Christmas 2026
Gift ideas for the maker in your life
Wheels, attachments and spare parts for a 2x72 grinder, from $39 to $289: picked from the shop for the maker who already has the machine. Each one ships from my shop in Sterling, Illinois.
7 ideas
Gifts under $100
Small things a maker will actually use: spare tension knobs, wheels for the platen and the small wheel holder, a drive wheel and a second tool arm.
Aluminum Drive Wheel for 2×72 Belt Grinders (4″ or 7″)
4-inch for torque and control, 7-inch for belt speed. Keyed 5/8-inch bore.
Starts at$50
2-Inch Lower Deflector Wheel for the Small Wheel Attachment
The lower deflector wheel, sold separately.
$60
Small Rubber Wheels for the Small Wheel Attachment
Five small wheel sizes, sold individually.
Starts at$60
2″ Rubber Wheel for Flat Platen
Rubber gives the belt a little compliance, so it tracks steadier and chatters less on finishing passes.
$80
4-Inch Rubber Wheel for the Deep Flat Platen
The larger lower rubber wheel for the deep flat platen.
$80
Tooling Arm 1.5″ × 1.5″ × 17″ Solid Aluminum
A spare 17-inch solid aluminum arm so each platen, wheel and rest keeps its own. Swap in seconds, no tools.
$89
4 ideas
Gifts under $300
Attachments that open up new work on the same grinder: hollow grinds on a contact wheel, inside curves on small wheels, slack-belt work and a table that locks for repeatable bevels.
Contact Wheel Attachment with 1.5″ Aluminum Tooling Arm (8″ to 14″)
Hollow grinds and fast profiling. An 8, 10, 12 or 14-inch wheel on a 16.5-inch solid aluminum arm.
Starts at$239
2×72 Adjustable Work Table Attachment 6×16
A 6x16-inch steel table that tilts and locks for repeatable bevels, and rotates 180 degrees for horizontal work.
$275Slack Belt Deep Flat Platen Attachment with 1.5″ Aluminum Tool Bar
A 4-inch throat for deep slack-belt work, with a 5/16-inch steel platen face for flats.
Starts at$289
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$289
Christmas 2026
Order by these dates to have it by Christmas
Grinders build in 7–10 business days and ship ground (up to 5 business days); accessories ship within 2 business days.
- Last day to order a grinder
- Dec 3
- Last day for accessories
- Dec 15
- Arrives by
- Dec 24
Before you wrap it
Questions from gift buyers
When will it arrive?
Grinders build in 7–10 business days and ship ground (up to 5 business days); accessories ship within 2 business days. Order an accessory by Dec 15 to have it by Christmas. Tracking number emailed the day it ships.
What does shipping cost?
Ground shipping in the lower 48: $95 a grinder, $145 with a motor package, $75 a motor on its own, $35 the first accessory and $15 each after; a tooling arm on its own $20 ($10 each extra); small parts (knobs, wheels) $12 flat on their own and free with anything bigger. A grinder with a motor and accessories is capped at $145.
Will it fit their grinder?
Everything on this page is made for the Torus 2x72 grinders. If they run another brand, email me the make and model before you order and I will tell you what fits.
What if it turns out to be the wrong part?
Returns are approved case by case within two weeks of arrival. Approved returns carry a 25% restocking fee, you cover insured return shipping for the full purchase price, and original shipping is not refunded.
Can I pick it up instead?
Local pickup at 1741 Industrial Drive Unit #8, Sterling, Illinois is free — email me and we will set a time inside shop hours.
Not sure what fits?
Ask me before you buy
Tell me which grinder they run and what they like to make. I answer my own email and will point you at the part that fits.