DIY slot and modelling drill 2.1mm

Precision to the millimetre for your slot and modelling work

The Tectime TT718 2.1 mm drill bit is a workshop tool designed for those who need to drill small-format pieces with accuracy: slot car chassis, bodies, motor mounts, bases, model parts, or any component where a millimetre of error can ruin the work.

Main features

• Diameter: 2.1 mm — a standard measurement in the preparation and adjustment of slot and modelling components.
• Brand: Tectime, reference TT718.
• Designed for precision DIY work in slot and static modelling.
• Suitable for use with mini-drills or desktop pillar drills at low speeds.

Applications in slot and modelling

In the slot workshop, this type of drill bit is used to enlarge holes in chassis, adjust axle spacing, prepare base mounts, or modify body mounting points. In static modelling and dioramas, it allows for precise work on resins, ABS plastics, and lightweight metals without chipping or deforming the material.

If you regularly prepare cars for club competition or simply enjoy fine-tuning every detail of your models, having a drill bit of the exact diameter saves time and avoids costly mistakes.

Usage and recommendations

• Always work at a moderate speed to avoid overheating plastic materials.
• Use a pre-marking point (centre punch or awl) to ensure drilling accuracy.
• Complement with adjacent diameter drill bits — such as the TT716 1.9 mm — for stepped work or progressive adjustments.
• Store the drill bits in their case or holder to protect the cutting edge and prolong their lifespan.

Frequently asked questions

What materials is this 2.1 mm drill bit suitable for?

It is aimed at technical plastics (ABS, polycarbonate), modelling resins, and lightweight metals commonly used in slot and scale modelling. It is not suitable for high-hardness materials such as hardened steel.

What type of tool should I use to mount it?

It is compatible with mini-drills like Dremel or similar, as well as with desktop pillar drills. The important thing is to be able to work at a controlled speed and with a good support point.

How does it differ from the TT716 1.9 mm drill bit?

Only in diameter: a 0.2 mm difference that can be crucial when adjusting holes, axle spacing, or mounts where clearance matters. Having both sizes on hand allows for progressive work.

Can it be used to drill slot car bodies?

Yes, as long as care is taken, with low speed and a good support point to prevent the drill bit from slipping and scratching the surface. A pre-marking point greatly facilitates the task.

The Tectime TT718 is a 2.1mm drill bit designed for slot car preparation and scale modelling work. Ideal for drilling small components, chassis, bodies and resin parts with precision, it is a reliable workshop tool for club racers and modellers seeking clean, accurate results on every build.