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Clark Woodturning Tools

At 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
  • 15 plus years of experience
  • Made in Oklahoma City, USA
  • Father and Son business


Clark Hollowing System on a Oneway Lathe with Fulcrum Support Tube

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!

  • Fits all lathes including minis

  • Hollow beyond 20’’

  • New Video Thickness Guide

  • Easy to use

  • Total system compatibility

  • Superior quality

  • Made in the USA

A red cplored Clark Steady Rest with 3 arms rotated to clear a laser thickness guide

Clark Steady Rest

Clark Steady Rests - customized to fit your lathe with color, number/position of arms, and base style ready to fit your personal lathe.

  • Proven to stand test of time

  • Heavy duty

  • Fully customized

  • Made in the USA


A red Clark Sphere Turning Jig

Clark Sphere Turning Jig

Clark Sphere Turning Jig uses 2 thrust bearings and has gross and fine adjustments of diameter.

  • Concave and convex shapes

  • Large diameter bowls and platters

  • largest Jig on the market

  • Made in the USA

  • Tight, smooth and strong

  • Create more than just spheres



  • 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 adaptor to allow use of the Clark Deep Hollowing System

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!! ( Thanks, Gregg! )

An Australian wood hollow form with natural top edge

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

A hollow form with natural edge

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 made.

Mike Stall from Sugar Land , TX United States

A closed hollow form shaped with the Clark Sphere Turning Jig

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 enjoy it.

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...

The 'oh shit' moment happens when the large log flies off the lathe...

Meet Our Team

A photograph of Keith Clark

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...

A photograph of Alex Clark and our business mascot Hank Williams

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.

Packing up the trailer with lathes taken to the AAW in Kansas City

Kansas City AAW 2017

We were very pleased with the positive comments received at the 2017 AAW Symposium. We brought our 2436 Oneway, a 16" Nova, and our Jet mini to show the range of hollowing systems and steady rests we offer.

This was the debut for our Video Thickness Guide!

The Spin Doctor team at the Atlanta AAW meeting in 2016

Atlanta AAW 2016

We had a very successful trip to the 2016 AAW Symposium! Melissa Jaggers, Alex Clark, and Keith Clark.

Melissa is a professional figure skater who performs on-board cruise ships traveling all over the world. She worked in the shop for several months making parts on our CNC machines. She then came to Atlanta to help show off some of the tools she helped make! Thanks Melissa and Alex too!