Silver Bullet Rotary Chuck
Precision, versatility, and a secure grip—all in one rotary.
The Silver Bullet is a fully articulating, gear-reduction, belt-driven rotary chuck designed for gantry and galvo laser engraving. Its four-jaw design distributes clamping pressure evenly and symmetrically, providing a secure grip with less tightening force—ideal for delicate pieces and heavier items alike.
Key Features
Push-button shaft lock: Makes one-handed operation quick and easy.
Highly adjustable jaws: Move seamlessly between smaller and larger cups without moving or swapping parts. The jaws offer 1.75 inches of adjustment from fully closed to fully open.
Indexed bowl extension bars: Quickly extend the jaws’ reach to accommodate dog bowls and other larger items.
Precision unrestricted scissor lift: The best configuration for unparalleled support capabilities, no towers in the way to worry about hitting.
Flexible motor options: Works with NEMA 17 or NEMA 23 motors without modifications.
Included with Every Configuration
Motor
Main motor mount
Precision unrestricted scissor lift
4 jaws
4 bowl jaw extensions, serving a similar purpose to a chuck bowl plate
4 large rubber jaw posts
4 thumbscrews for the bowl jaw extensions
First ever Laser 4 Jaw chuck that gives you more pressure with less force by disbursing the pressure evenly and symmetrically. Ideal for more delicate and heavier items. Most adjustable: The most adjustable jaws on the market that allow for seamless transition between smaller and larger cups without having to move or change any parts like other rotaries. These jaws have a total of 1.75in adjustability from fully closed to fully open. Universal adaptability: Adaptable to the Rotoboss, Junior, Ascend and Galvo rotaries. Diverse Engraving Potential: Can be used with NEMA 17 or 23 Motors with no mods required. Lifetime Warrant and Support
Below are a few of our most popular rotaries that our customers love engraving with.
Popular Rotaries
RotoBoss 2.0
RotoBoss Junior 2.0
RotoBoss Ascend
Rotoboss Talon Pro
RotoBoss BOOT
RotoBossTM 2.0
Introducing the future of precision engraving – our state-of-the-art Laser Rotary Attachment. Unlike any other in the market, this rotary attachment is meticulously designed to merge unparalleled functionality with world-class mechanics.
Features
Lifetime Warranty
Unique Height Adjustability
Compatible with Lightburn, RDWorks, EzCad, GRBL, NEMA 17 and 23 Motors
Step into the new era of precision artistry with our top-tier Laser Engraving Rotary. Setting itself apart from the rest, this rotary tool is the culmination of exceptional craftsmanship and superior engineering.
Features
Lifetime Warranty
High-End Stepper Motor
Adaptable Height Mechanism
Compatible with Lightburn, RDWorks, EzCad, GRBL, NEMA 17 and 23 Motors
Welcome to the next generation of engraving excellence with our unmatched Laser Rotary Attachment. A blend of time-tested techniques and modern innovation, this attachment stands alone in its category.
Features
Lifetime Warranty
Tower-Free Design
Unobstructed Pass Through
Universal Fit for Laser Heads
Compatible with Lightburn, RDWorks, EzCad, GRBL, NEMA 17 and 23 Motors
First of its kind fully articulating gear reduction belt driven Rotary Chuck for Gantry and Galvo laser engraving. Designed to efficiently mount to and Galvo laser bed in the horizontal or vertical position.
Features
Lifetime Warranty and Support
Ideal for Delicate and Heavy Items
Adjustable Jaws
Adaptable to the Rotoboss, Junior, Ascend, and Galvo Rotaries
Introducing the future of precision engraving – our state-of-the-art Laser Rotary Attachment. Unlike any other in the market, this rotary attachment is meticulously designed to merge unparalleled functionality with world-class mechanics.
Features
High-quality stepper motor
Innovative design allows you to effortlessly raise and lower the slave wheels
Introducing the future of precision engraving – our state-of-the-art Laser Rotary Attachment. Unlike any other in the market, this rotary attachment is meticulously designed to merge unparalleled functionality with world-class mechanics.
Features
Lifetime Warranty
Unmatched Precision
Unique Height Adjustability
Compatible with Lightburn, RDWorks, EzCad, GRBL, NEMA 17 and 23 Motors
Step into the new era of precision artistry with our top-tier Laser Engraving Rotary. Setting itself apart from the rest, this rotary tool is the culmination of exceptional craftsmanship and superior engineering.
Features
Lifetime Warranty
High-End Stepper Motor
Adaptable Height Mechanism
Compatible with Lightburn, RDWorks, EzCad, GRBL, NEMA 17 and 23 Motors
Welcome to the next generation of engraving excellence with our unmatched Laser Rotary Attachment. A blend of time-tested techniques and modern innovation, this attachment stands alone in its category.
Features
Lifetime Warranty
Dual Lift, Tower-Free Design
Unobstructed Pass Through
Universal Fit for Laser Heads
Compatible with Lightburn, RDWorks, EzCad, GRBL, NEMA 17 and 23 Motors
Here we have the next generation of engraving excellence with our unmatched Laser Rotary Attachment. Advancing the Chuck Rotary market with the First 4 jaw chuck rotary for laser engraving machines. Many new features you wont find on any other rotary in its class.
Features
Unique 4 Jaw Chuck Design For better performance.
Locking Collet Design for fast tool free tightening
Tool Free Use with included thumb screws.
Lifetime Warranty
Universal Fit for Laser Heads
Compatible with Lightburn, RDWorks, EzCad, GRBL, NEMA 17 and 23 Motors
We Know you are going to love our rotaries, but don't take our word for it. See what just a few of our customers say about their RotoBoss rotary attachments.
A+
TJ. Flot Verified Buyer
May 7, 2025
Always There!
Now when it comes to rotaries there are a lot out there and some leave a lot to be desired. I personally have had my fair share. About two years...Now when it comes to rotaries there are a lot out there and some leave a lot to be desired. I personally have had my fair share. About two years ago I got my first one from Jason Rife at rotoboss after struggling by with another one constantly dropping items i would try and chuck up(not going to mention that brand but its a big one) since I have not had a single issue with my Talon(I have ran it for 16 hours a day since) until about three days ago. Well being the hard head I am I didn't reach out for a few reasons. 1 I have been to Jason's shop while visiting Florida and the dude is working like crazy every time. He doesn't sit on his ass and talk about lasers the guy is a workhorse and keeps changing the industry! Second i'm a hard headed guy and duh I already know everything! Well after getting my ass kicked by my talon I said hell i'm just gonna reach out.
I reached out to Jason at 0917 this morning via FB. Mind you he has already sold me three rotoboss rotaries and has always been a solid sounding board if I need help(he has already gotten my money, this is where most customer service stops) instead at 0918 he messaged me back and we troubleshot my rotary so my gantry is back up and operational.
Again I am not endorsed nor an affiliate of RotoBoss just a small town shop doing what I can. However this type of stuff should be appreciated. In all honesty he could have blown me off or asked me to reach out to his customer service but that's not him.
If you are in need of a bad ass rotary and want a solid dude to deal with he gets 10 out of 5 stars in my book. And his rotary is a beast. Thanks again Jason you've got a customer for life!
A+
Amber P. Verified Buyer
May 16, 2023
Above and beyond!
I've always loved my rotoboss but never had to do anything with the customer service side of things...until I couldn't figure out how to engrave dog bowls and yall told...I've always loved my rotoboss but never had to do anything with the customer service side of things...until I couldn't figure out how to engrave dog bowls and yall told me I needed the drop down mounts!
A+
Chelsea B. Verified Buyer
May 12, 2023
Excellent
Excellent Design. Fast shipping
A+
Richard W. Verified Buyer
May 7, 2023
Perfect addition
I was having very slight walking with my tumblers. Not anymore!!! This attachment makes all the difference.
A+
Randdall Reyna Verified Buyer
January 7, 2025
Easy Setup
I watched every video you guys had while waiting on this to show up. Made it easy to know exactly what to do when setting it up! As someone that...I watched every video you guys had while waiting on this to show up. Made it easy to know exactly what to do when setting it up! As someone that didn’t have a rotary yesterday, I was able to set this up very quickly watching your vids.
I tested 3 different color cups and saved settings for all 3 before running my first cup shown in this vid. Y’all keep doing what yall are doing, made it simple and easy to get started.
Have questions? Below are some of the most common questions and answers for our customers. If you have any other questions, feel free to contact us today!
You will need to install the supplied Mug spacer (Triangular piece) that bolts to the face of the Clamp bracket.
You may also need to install the heel plate spacer (slotted rectangular piece) that slides down over the heel plate to offset the gap.
When doing water bottles you will need to adjust your steps down, a good starting point is to lower your step by about 1,000 steps and adjust from there. Once you have the settings set, save that file from machine settings so you can quickly revert to that when you do that object again.
Use the large clamp wheel provided in your bag with the stickers.
Make sure the rim (not the screws) is set on the drive wheels.
Heel Plate not close enough to the bottom of the cup (don’t let it touch).
O-Rings twisted.
You can slightly raise the slave wheels up a little past level.
Mechanically they are the same. The major difference is that the Rotoboss has two towers and allows for more adjustability for many more objects and the Junior only has one tower and is made for mainly Cup, Mugs, Tumblers and water bottles.
2 Phase has 4 wires coming out of the motor.
3 Phase has 6 wires coming out of the motor.
Watch Our Rotaries in Action
Checkout our video of our RotoBoss Ascend rotary laser engrave on a wooden baseball bat. Order yours today!
In the heart of Ohio, young Jason dreamt of jet engines and wooden carvings. The US Navy saw him for 20 years, training rookies and perfecting jet mechanics. But his garage? It whispered tales of crafts, designs, and innovations. Nearing his Navy retirement in Italy, Jason's heart pulsed with ambition - why rely on others when he could craft magic himself...