1. Insert the bit fully into the handpiece and lock it; run it briefly at low speed to check it spins true.
2. Hold the handpiece like a pencil and brace your hand for stability.
3. Coarse grit removes product fast, so keep speed moderate and pressure light until you are confident with the bit.
4. Angle the slim cone along the sidewalls and smile line or into the area being prepared, using light passes.
5. Use light, controlled passes and keep the bit moving at all times.
6. Blend the area with a finer bit or buffer if needed.
7. After the service, brush away debris, clean and disinfect the bit according to your local regulations, and dry it fully before storing.

• Pressing the tip into the product: Pressing the point creates grooves; keep the cone angled and moving.
• Finishing with the coarse grit: Coarse leaves visible scratches; always follow with a medium or fine bit before colour or top coat.
• Working too close to the skin: Contact with the skin causes discomfort; keep the bit on the product and away from live tissue.
• Using the wrong rotation direction: Filing towards the skin on the sidewalls increases the risk of nicks; switch direction to suit the side you are working on.
• Pressing too hard: Pressure creates heat and grooves; use light contact and let the bit do the work.

• Bit type: Slim cone, cross spiral cut
• Grit: Coarse
• Material: Tungsten carbide
• Shank size: 3/32" (fits most professional nail drills)
• Finish options: Gold
• Best for: Bulk removal, shortening, backfill prep and reshaping thick enhancements
• Care: Brush, clean and disinfect between clients; dry fully before storing
• Use: Professional nail services

Is a slim cone useful for backfills?

Yes, its slim taper and coarse cut make it efficient for cutting into the smile line area during backfill prep. Work slowly and keep the bit moving for a clean line.

Is coarse grit too aggressive for a regular fill?

For a routine fill with little growth, coarse can remove more than you need; it is best for heavy grow-out, shortening or full product reduction. Many technicians debulk with coarse, then switch to medium or fine to refine the shape.

How do I keep a tungsten carbide bit cutting well?

Brush out dust after every client, then clean, disinfect and dry the bit fully before storing. Packed debris in the flutes is the most common reason a carbide bit starts to feel dull.

Should I switch rotation direction when working on each sidewall?

Yes, many technicians change direction so the bit moves away from the skin on each side. This reduces the risk of catching the sidewall and gives a cleaner line.

Why do I see grooves near the cuticle line after filing?

Grooves usually come from tilting the bit or pressing too hard in one place. Keep the bit flat to the area you are working on, lighten your pressure and blend with a finer grit.