Vicmarc Dovetail Jaws suits VM90/100

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If you need to mount bowls securely, the Dovetail Jaws from Vicmarc are an excellent option. Designed to expand into a recess or clamp onto a spigot, these jaws offer reliable and precise clamping. 

The sizes indicated on the drawing represent the jaws when they form a perfect circle. With the VM90 and VM100 chucks, you can expect approximately 38mm of expansion beyond these specified sizes. All Dovetail Jaws have an internal dovetail angle of 13 degrees for clamping and an external dovetail angle of 13 degrees for expanding.

The Vicmarc Dovetail Jaws also feature a machined taper on the face of the dovetail, which enhances clamping accuracy in both clamp mode (on a tenon) and expansion mode (in a recess). When clamping on a tenon, the flat section of the bowl/tenon may be tapered the wrong way or contain wood fibers or debris that can interfere with a secure hold. With the jaws' slight taper, you can achieve a firm and accurate grip away from the corner, preventing any wobbling. When clamping in a recess, the flat section is often tapered towards the center of the bowl. This taper ensures a secure hold right in the corner (outermost diameter) for maximum accuracy.

Dovetail Jaw Capacity (when perfect circle)

V-00644 Dovetail Jaw 2 Step 70mm
V-00642 Dovetail Jaw 100mm
V-00643 Dovetail Jaw 144mm