Small chuck holder with chucks

The precision chuck that should not be missing from your slot tool box

The SC-9517A from Scaleauto is a compact pin vice that comes with a complete set of seven small diameter drill bits: 0.2 / 0.3 / 0.4 / 0.5 / 0.6 / 0.7 and 0.8 mm. A range that covers practically all fine drilling needs that arise in the preparation, maintenance, and customization of slot cars.

Function and performance

In the slot workbench, precision drilling is a common operation: creating holes in plastic or resin chassis, adjusting mounts, routing wires, cleaning screw holes, or modifying bodies. For all this, it is essential to have small diameter drill bits and a chuck that allows for controlled and comfortable work.

The compact design of the SC-9517A facilitates one-handed operation and provides the necessary sensitivity to avoid forcing the finer drill bits — especially those of 0.2 and 0.3 mm — which can easily break if too much pressure is applied or if a larger, less tactile tool is used.

Set contents

• 1 small format pin vice
• 7 drill bits: 0.2 – 0.3 – 0.4 – 0.5 – 0.6 – 0.7 – 0.8 mm

Assembly and preparation

Changing the drill bit is straightforward: simply loosen the chuck, insert the drill bit into the collet, and tighten it firmly before starting to drill. For the smaller diameters, it is advisable to mark the drilling point beforehand with a fine punch or needle to prevent the drill bit from slipping on smooth surfaces.

It is recommended to work with smooth movements and at low speed if using a micromotor, or by hand when the operation allows, especially with the smaller diameter drill bits.

Ideal for…

• Preparers and mechanics of competition slot cars.
• Enthusiasts who perform tuning or customization work on their cars.
• Any hobbyist who needs a precision chuck for delicate work on plastic, resin, or soft metal.

Frequently asked questions

Can the chuck be used with a micromotor or hand drill?

It depends on the type of collet that the chuck incorporates. If in doubt, it is recommended to consult the coupling specifications before combining it with an electric drill. For manual use, its compact design makes it very comfortable.

Are the included drill bits common replacements?

The small diameter drill bits are consumables that wear out or break with use, especially those of 0.2 and 0.3 mm. Scaleauto and other slot tool manufacturers usually offer replacement drill bits of these diameters separately.

What materials are these drill bits suitable for?

The included diameters are suitable for working on plastic, resin, and soft metals commonly used in the construction and preparation of slot cars. They are not designed for very hard materials like hardened steel.

Can I expand the set with larger diameter drill bits?

The set goes up to 0.8 mm. For larger diameters, there are other chucks and specific sets in the Scaleauto catalogue and other slot tool brands.

The Scaleauto SC-9517A is a compact pin vice with a complete set of seven drill bits ranging from 0.2 to 0.8 mm — an essential precision tool for slot car preparation, chassis work, and fine drilling tasks on plastic or resin bodies. A must-have for any serious slot car builder or club racer looking for control and accuracy at the workbench.