NEW! Spool to Spool System

Royal Master is proud to introduce the Spool to spool system. Its capabilities are designed to revolutionize many different industries.

  • Grind Continuous Medical Guidewires for inventory reduction and Work in Process Reduction
  • Thrufeed Grind NiTi to a consistent removing the oxide at a rate of 1" / Second ( 25mm/sec )
  • Grind your Braded Catheter Tubing
  • Add Polymer Coating processes after grinding in-line
  • Thrufeed Grind your tungsten wire to a specific wire diameter for future processing.

The machine feeding system is capable of taking a spool of raw material up to 30 lbs in weight, down to .010" diameter and feeding it to another spool. All while rotating at 2000 rpm, and level winding for a uniform wrap. The centerless grinder pictured in the center of the unit is manufactured by Royal Master and coupled with this system can grind continuous profiles into a product or simply Thrufeed grind your material to a consistent diameter.

After exiting the centerless grinder, a laser gauge will read the diameter and if necessary feed back to the machine a size compensation to the diameter of the product. It will also calculate all the necessary SPC data

The system is available as a stand alone for your own propriety integration of a process or Royal Master can integrate the centerless grinder process for you.

The system is robust in its design and can accommodate spools in size up to 14" diameter and 4" wide. The quick change design of the spools makes for a seamless change from one product to another. The payout and take up spools use a heidenhein encoder to track the length output of the wire and displays the dispensed material on the screen. The system can be programmed to stop grinding after a pre-programmed amount of material has been ground. The exit spool can be changed out and grinding can resume at the same or different diameter.

The spool system comes enclosed in a protective interlocked cage for safety, and all programming is done through an intuitive touch-screen with easy to use inputs.



The Spool to Spool Feeding System can be set up to rotate as it pays out and collects spooled wire. Applications will benefit by the uniqueness of the system with its ability to rotate in synchronization to allow for a process to be performed on a round material.

The process between the spools can be a grinding process. The size of the wire is limited in its flexibility for the upper range and its tensile strength in its lower size range. Lower diameter range is 0.004".

Here we are demonstrating the grinding of a two taper form in continuous mode with in process gauging and display of diameters and lengths.

Materials such as Nitinol, SLT Stainless steel, catheters, guitar strings, nylon or plastics are ideally suited.

With the Spool to spool system the process will:

  • Feed and Rotate Raw Material From One Spool to Another
  • S2S Feed System not limited to Grinding Process - Pick your process in-between the two spools
  • Up to 0.060" Diameter
  • Grind Wires down to 0.004" diameter (0.100 mm)
  • Grind profiles using Gen X
  • Grind diameters using TG-12x4 Hi-Acc or Standard Ram Bed Positioning
  • Typical Stock Removal 0.005" (0.125 mm)
  • Closed Loop Laser Gauge for Auto Compensation
  • In-Line Alcohol Rinse, Wipe and Dry
  • Measure Diameter over Length with SPC and Trend Chart
  • Length Tolerances within +/- 0.040" (1.0 mm) when Grinding
  • Express Feature for Non-Ground Wire Sections
  • Spool Capacity of up to 14" Diameter by 4" Wide – "Weld Wire" Spools
  • 6 Axis of Coordinated Motion; all Servo Driven and Verified by Encoders
    • Rotational Axis (2); Frameless Servo and Slip Ring Spindle
    • Spool Pay-out – Frameless Servo Motor with Encoder on Torque Mode
    • Spool Take-up - Frameless Servo Motor with Encoder on Drive Mode
    • Level Winding on Take-Up Side – Servo Driven Ball Screw with Carbide Guide
    • Linear Wire Sensor – Linear Distance Encoder to Coordinate Take Up Speed to Pay Out Speed and Coordinate Ram Position to Interpolate Grind Profiles

  • Easy To Use Touch Screen Interface
  • Easy, Intuitive Controls Guide You to Set Parameters; No Programming
  • Process tolerance and speed not limited by Spool 2 Spool

We have a system in operation for test grinding purposes. Here we could receive your material and begin testing the grinder and Spool Feeding System. You would need to send material and prints. We can work out the details of the test grind when you are ready.