Model # 10006

Internet #204488311

NOVA Safe Lock Woodworm Screw Chuck Accessory
0669762002785

NOVA

Safe Lock Woodworm Screw Chuck Accessory

$1780 /each
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Product Overview

NOVA 10006 Safe Lock Woodworm Screw Chuck Accessory comes standard with most NOVA Chucks but is also available as a separate purchase. Suitable for NOVA Chucks. Quick and easy method to mount small bowls blanks. It provides a secure mounting to form the outside of bowls. Strong thin edged thread form design to cut into wood and hold on. Square shank for strong and positive location into the chuck body. Designed by the innovators of the 4 Jaw Chuck for wood turning, Teknatool International - since 1955. Backed by a full replacement 2-year warranty. Call our customer service center toll free on 1-866-748-3025.

  • Standard with most NOVA Chucks
  • Quick and easy method to mount unformed small bowl blanks
  • Secure mounting to form the outside of bowls
  • Strong thin form screw to cut into wood
  • 2-year warranty

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Customer Questions & Answers

correct mounting of woodworm screw

Asked by: Hogjaw
This is a convenient mounting method. The woodworm screw is purpose-designed for screw chucking. It is a cylindrical screw which maintains its full holding power along the whole length, unlike normal tapered screws. The thin thread form is specially designed to cause minimum damage to wood fibres. They grip better than screws with thicker threads because there is a larger volume of undamaged wood retained within the screw. The woodworm screw is made complete with the boss section in one piece. The woodworm screw is designed to be used with the 50mm jaws remaining in place on the chuck. This facility is very convenient for remounting work directly onto the jaws after the screw is removed. To convert to this operation, place the boss section into the centre of the chuck making sure flat shanks are aligned to the jaw slides and close jaws around it. BEFORE FINAL TIGHTENING MAKE SURE THAT THE FRONT OF THE BOSS SECTION OF THE SCREW IS SEATED BEHIND AND AGAINST THE 50mm JAWS. This will prevent any tendency for the boss section to creep forward when the screw is being used. The front face of the 50mm jaws has been machined to provide an accurate backing surface. This is quite an advantage, providing a much tighter fit and better tolerance for irregular face stock. This feature is also quite an advantage when using the screw to mount a bowl for first stage bowl turning - forming the outside of the bowl straight onto the jaws (the screw is first removed) after the recess has been formed. SCREW DEPTH: The screw provides 19mm (3/4 inch) of thread beyond the 50mm jaws. With all wood blocks over 150mm (6 inches) in diameter the full thread depth of 19mm should be used. Irregular, rough tree blanks (e.g. small sections of tree limbs) not exceeding the above sizes can be held quite firmly BUT caution must be exercised. Check for adequate contact. CAPACITY: DO NOT USE THE SCREW FOR VERY LARGE WOOD BLANKS. Its use is intended for small bowl and screw chucking work. The maximum capacity which should be mounted on the screw - 250mm (10 inches) diameter x 100mm (4 inches). DO NOT EXCEED 600 RPM FOR THIS OPERATION. Use tailstock support. PREPARATION: The 10.5mm thread requires a drilled hole about 8mm (5/16”) in diameter. The screw has considerable holding power and it is sometimes difficult to unscrew, so wax or oil the thread before mounting the wood. CARE: The threads are fine and can be damaged by mishandling. DON’T hammer into wood! DO screw into a pre-drilled hole. Any nicks on the threads can be removed by careful filing.
Answered by: NOVA 1
Date published: 2017-07-07
  • y_2017, m_7, d_19, h_9CST
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