TSDr, LLC, we manufacture tools for wood-turning lathes featuring; the Clark Steady Rest, the patented Clark Deep Hollowing System, as well as the Clark Sphere Turning Jig! Have peace of mind in The Dr's systems, we will work with you to make you happy and will not settle till your are 100% satisfied. All of our tooling systems are designed and manufactured to order by Dr. Keith and Alex Clark.
Custom made to order
Multi System compatibility
18 plus years of experience
Made in Oklahoma City, USA
Clark Deep Hollowing
Clark Deep Hollowing System Don't be limited by other systems - paired with a Clark Steady Rest, the proper cutting tip, our guarded tool rest, and our Fulcrum Support Tube accessory, this system cannot be beaten!
The new accessory pictured here provides and extension from the standard 1.25" to a 1.75" diameter bar which includes a larger FULCRUM SUPPORT TUBE to allow the basic Clark Deep Hollowing System to hollow vibration free to beyond 3 feet deep while preserving all the features of the standard system! We now have a completely expandable setup to accommodate a wider depth of hollowing and an improved experience between 12 and 36 inches deep! Click on the photo...
Steady Rest, Clark Deep Hollowing System, Laser Thickness Guide, Fulcrum Support Tube in action
John Leggett demonstrates the full system in action with a 3 arm Clark Steady Rest on a 20" swing Powermatic lathe.
Video Thickness Guide
Now thickness indication with camera and TV much improves the awareness of where the cutter tip is located inside the wood being hollowed. Turners have said that this if far superior to using a laser guide!
New Segmented Hollowing Bar
This is the new design for out hollowing bar. Now the standard bar is 30" long to allow hollowing to the same 20-30 inch depth but has basically a handle 18" long to extend the bar to allow a portion to attach the laser onto. The laser can now be easily removed or replaced just by taking the extension on and off for a much more convenient deployment of laser or camera thickness guide device. The extension can also be used as a hollowing bar for external use or small hollowing projects. The extension can be used as a handle for general turning! The 30" hollowing bar can be used for smaller projects. You can order a 24" bar with 12" extension for a mini lathe with 12-14 inch swing.
Deep hollowing a large mesquite burl with the Clark Deep Hollowing System and Steady Rest
John Tisdale of Dallas Texas creates unique and large hollow forms from mesquite burls. This is a very challenging task. See him working on perhaps the largest mesquite burl ever hollowed. The 700 pound hunk of gnarly wood has required many special modifications in his shop.
VB Lathe Owners take note-- Use our tools on VB Lathes!
TSDr, LLC is proud to announce a new Clark Woodturning Tool!
We have developed an accessory to allow VB LATHE owners to use our Clark Deep Hollowing System and Clark Sphere Turning Jig!
You can even use the hollowing system for external turning!
Please contact Keith or Alex for more information.
beautiful, well-built tools!
The Clark Steady Rest and the Clark Deep Hollowing System were born in the basement and garage. Our patent for the hollowing system was obtained in 2006. In the meantime, the business grew from its garage birthplace to a 5000 sq ft leased building which is now filled with machine tools. All the processes except powder-coating to include design, machine programming, fabrication, machining, packaging and shipping have been done by Dr Clark until recently, when help arrived in the form of son Alex, whom you can meet at the bottom of this page. 17 years of service and design behind the name TSDr. LLC!!!!
Please share your experience at the bottom of a product page!
Gregg Schultz from Lynd, MN United States
In over twenty years of turning hollow forms I have
been able to try every system that is out there, and a bunch of homemade
rig's of every setup possible. I found Keith's setup online and after a
bit of reading and thinking about his setup I knew I found the golden
ticket. Seriously, this is the best thing for hollowing on the market.
From small diameter to the largest and longest piece your lathe can
hold, this thing works. And beautifully. If there is a better setup
out there I would have to see it to believe it. And even then, my unit
is not for sale. Awsome, doesn't fully explain Keith's setup!! (
The Clark Deep Hollowing System has taken my wood-turning to levels I never thought possible. I couldn't recommend it any more highly.
Chris Carskaddan from Great Falls, VA United States
The Clark system works very well. Today I finally set mine up and
hollowed a small vase about 13 inches deep. Because of the laser and
the super high quality steady rest this is the thinnest vase I have ever
Mike Stall from Sugar Land , TX United States
This is a super hollowing system. If you want the very best experience
hollowing then this is the only system. Keith has engineered and
produced a system that when used properly is nearly vibration free. When
you plan on spending the day or week hollowing, you may as well
Jonathan Leggett from Chesterfield, VA United States
This video is meant to be viewed by those serious about experiencing the Clark Deep Hollowing System.
Any size lathe - from a desktop mini with 12" swing to any very large swing lathe.
See the system used externally!
1/8" chips with ease
Watch us novice turners easily pulling out 1/8" thick ribbons of wood from deep within the reaches of this log!
Angle of cutter nailed..
See how our 'Angle of Attack Adjustment Feature' that makes changing the angle of the cutting tip easy!
Steady rest can save the day...
'oh shit' moment happens when the large log flies off the lathe...
Meet Our Team
Keith Clark "CEO"
Why ‘The Spin Doctor’? Keith Clark, MD, PhD is a full time, practicing ENT surgeon. Near the end of the 'last century', after finishing a PhD in Physiology and reaching full-professor with tenure at the OU College of Medicine, he began ‘spinning’ ideas of designing and making tools with ‘spinning’ metal lathes and milling machines to cut wood shapes ‘spinning’ on a lathe. Dr Clark moved to private practice and stepped up the ‘hobby gone astray’. No, there is no formal training in machining, engineering or even wood turning, but he does have 2 doctoral degrees. In addition, Dr Clark ‘spins’ at a local ice rink most early mornings as a figure skater and ice dancer. So ‘The Spin Doctor’ seems to make some sense….
Yup, that is a photo from his younger days...
Alex Clark "COO"
I graduated from Oklahoma State University with a major in Entrepreneurship and Health Promotion. Daily responsibilities include; shop security, social media marketing, development of distributors, risk management, and client development. I want to hear about your experience with our tools and company. I will make your experience with our company and tools one that will make a lasting impression on your life through service, dedication and attention to detail. Our goal is to build relationships and impact people in a positive way so that we can grow and turn together. "Iron sharpens Iron", we need YOU as much as you need us to create well built tools.