Complete set of 6 joining clamps for closing cracks in arched tops and backs. the flat brass material is tension resistant but can be very easily re-bent and adapted to any arched shape. Specially shaped and notched polyamide jaws fit the instrument exactly and carefully, the material is glue-repellent.


Material: Brass 

Technical Details: Span widths: 300-370 mm (11.8"-14.6") / 360-430 mm (14.2"-16.9") / 400-470 mm (15.7"-18.5") / 440-510 mm (17.3"-20.1") / 580-650 mm (22.8"-25.6") / 610-680 (24"-26.8") mm.

Special crack clamp made from flat brass material which combines sturdiness with tradidional appearance. 3 arms are adjustable at angle for closing any cracks, the forth arm can be adjusted in length. specially shaped and notched polyamide jaws fit the instrument exactly and carefully, the material is glue-repellent.

Material: Brass 

Technical Details: Span widths: ca. 170-250 mm (6.7"-9.8").

Special crack clamp made from flat brass material which combines sturdiness with tradidional appearance. 3 arms are adjustable for closing any cracks, the fourth arm can be adjusted in length. specially shaped and notched polyamide jaws fit the instrument exactly and carefully, the material is glue-repellent.

Material: Brass 

Technical Details: Span widths: ca. 335-455 mm (13.2"-17.9").

This special device helps closing cracks in arched tops or bottoms which are surely clamped in two polyamide jaws. 8 adjustable pads can be individually positioned. The heavy duty construction prevents a shiftig of the wood while gluing which may occur when using single crack clamps.

Material: Zinked steel.

Clamp with precise guide for drawing cracks together at the edges of the top or back of stringed instruments. 3-D-adjustability (spring assistance), direct pressure application upon closure, 4 screws

Material: Aluminium 

Technical Details: Opening 12 mm (0.47"), depth 25 mm (0.98").

Strong mini-clamp for positioning wooden patches through the f-hole when reparing cracks in violins or mandolins without removing the top. The patches are lightly glued to the clamp and then positioned for clamping in place.

Material: Zinked steel 

Technical Details: Opening 22 mm (0.87"), depth 30 mm (1.2").

Strong mini-clamp for positioning wooden patches through the f-hole when reparing cracks in violins or mandolins without removing the top. The patches are lightly glued to the clamp and then positioned for clamping in place.

Material: Zinked steel 

Technical Details: Opening 22 mm (0.87"), depth 80 mm (3.15").

With this special clamp a resonator for supressing the wulf tone can be glued under the top of a stringed instrument.

Material: Brass 

Technical Details: Opening 20 mm (0.79").

This double screw miniature clamp is despite of its small size very sturdy and is used with the repair of stringed instruments. It is for example ideal for edge repairing. It is also suitable for repairing works at the sound hole (second pad screw with guide)

Material: Brass 

Technical Details: Opening 13 mm (0.51").

This high quality special clamp is ideal for gluing on the bridge of stringed instruments.
Because the impression plate is adjustable at height but totally fixable, the clamp can be easily adjusted for any needs. The guided movable tensioning arm is made from aluminium and has a ball-jointed swivel pad (direct pressure application upon closure), the fixed tensioning arm is made from special nickel-plated steel. Despite of the large opening the clamp is extremely light.


Technical Details: Jaw depth.