Louisville Beauty Academy (LBA), The College of Human Service of Di Tran University, proudly shares Chapter X of THE COMPLETE NAIL LICENSING MASTER BOOK — 2025 Edition.
As part of our mission to humanize education and remove fear from the licensing process, we are releasing all 50 chapters online for free for students, schools, ESL learners, and future beauty professionals across the nation.
Each chapter is part of the most comprehensive nail licensing textbook ever created, designed specifically for State Board Theory & Practical and built on our core philosophies:
YES I CAN™ (courage, confidence) and
I HAVE DONE IT™ (achievement, professionalism).
Louisville Beauty Academy continues to adapt and adopt at light speed, providing not only this complete textbook but also upcoming videos, visual guides, and step-by-step practical demonstrations, all aimed at ensuring every learner feels supported and empowered.
LBA is proud to serve as a true YES I CAN™ institution and a Center of Excellence in beauty education.
CHAPTER 13 — ELECTRIC FILING (E-FILE / ELECTRIC NAIL DRILL)
Louisville Beauty Academy (LBA) — YES I CAN™ Use the E-File Safely, Gently & Professionally
Electric files are used to:
- reduce bulk
- shape enhancements
- clean the underside
- refine acrylic, gel, and polygel
- prepare for fills
- shorten enhancements evenly
But e-files also carry the highest risk of:
- rings of fire
- cuts
- heat burn
- nail thinning
- infections if bits are contaminated
Therefore, at Louisville Beauty Academy we teach:
“Slow is safe. Pressure is dangerous. Let the bit do the work.”
🔑 KEYWORDS WITH DEFINITIONS, EXAMPLES & SENTENCES
(ESL-friendly, LBA humanized)
1. E-File / Electric File
Meaning: Powered tool used to shape and refine nails.
Sentence:
“At LBA, we use the e-file with control—not speed.”
LBA Tip: Precision tool.
2. RPM (Revolutions Per Minute)
Meaning: Speed of the e-file.
Low: 3,000–7,000 RPM
High: 15,000–20,000 RPM
Sentence:
“Higher RPM does NOT mean better—it means careful control is required.”
LBA Tip: Speed with purpose.
3. Torque
Meaning: Power behind the rotation.
Sentence:
“Good torque prevents the e-file from stopping under pressure.”
LBA Tip: Power matters.
4. Mandrel Bit
Meaning: Metal bit that holds sanding bands.
Sentence:
“We use the mandrel for sanding bands only.”
LBA Tip: Holder bit.
5. Sanding Band
Meaning: Disposable abrasive sleeve placed on mandrel.
Grits:
- 180 (fine)
- 150 (medium)
- 80 (coarse)
Sentence:
“At LBA, sanding bands are single-use only.”
LBA Tip: Disposable only.
6. Safety Bit (Ball Bit / Smooth-Top Bit)
Meaning: Bit with rounded top to prevent cutting.
Use: Cuticle area refinement on enhancements.
Don’t use: On natural nail.
Sentence:
“Safety bits protect beginners from cutting clients.”
LBA Tip: Beginner-friendly.
7. Diamond Bit
Meaning: Textured bit used for smoothing or cleaning.
Sentence:
“Diamond bits are gentle and don’t shave large chunks.”
LBA Tip: Smoother.
8. Carbide Bit
Meaning: Strong metal bit used for removing product.
Flute types:
- Coarse
- Medium
- Fine
Use: Remove acrylic or hard gel.
Don’t use: On natural nail—EVER.
Sentence:
“Carbides are strong tools—never file natural nail with carbide.”
LBA Tip: Power bit.
9. Ceramic Bit
Meaning: White/colored bit that stays cooler.
Use: Reduce heat.
Sentence:
“Ceramic bits help reduce friction heat for sensitive clients.”
LBA Tip: Cool bit.
10. Ring of Fire
Meaning: Red painful ring on natural nail caused by too much pressure or speed.
Sentence:
“Ring of fire means pressure or angle was wrong.”
LBA Tip: Avoid always.
11. Heat Spike
Meaning: Heat from friction due to pressure, speed, or staying in one place.
Sentence:
“If client feels heat, we remove the bit immediately.”
LBA Tip: Move constantly.
12. Direction (Forward / Reverse)
Meaning: Rotation direction depending on hand used.
Sentence:
“Forward for right-hand techs, reverse for left-hand techs.”
LBA Tip: Match your hand.
13. Dust Collector
Meaning: Tool that collects dust created by e-filing.
Sentence:
“Dust collectors keep the air and our lungs safe.”
LBA Tip: Protection.
14. Bit Sanitation & Disinfection
Meaning: Must disinfect after EVERY client.
Sentence:
“At LBA, bits are cleaned, disinfected, and dried between each use.”
LBA Tip: Clean tools only.
15. Light Touch Technique
Meaning: Letting the bit glide gently without force.
Sentence:
“We guide the bit—never push.”
LBA Tip: Control, not pressure.
💡 WHEN TO USE E-FILE AT LBA (Safe)
✔ Acrylic removal
✔ Gel removal (hard gel)
✔ Polygel shaping
✔ Backfill / fill-in prep
✔ Smoothing thick product
✔ Underside cleaning
✔ Refining sidewalls
✔ Cleaning gel polish bulk (NOT natural nail)
⚠️ WHEN NOT TO USE E-FILE (Safety & Liability)
❌ On natural nails (unless state-authorized and trained)
❌ On cracked or damaged natural nails
❌ On broken skin
❌ On children
❌ On diabetics unless extremely gentle
❌ Near cuticle on thin natural nails
❌ When unsure of bit type
LBA teaches:
“When in doubt, hand file.”
🧼 LBA SAFE E-FILE PROCEDURE (LICENSING-READY)
1. Sanitize Hands & Prepare Station
✔ Mask
✔ Dust collector
✔ Safety glasses if needed
2. Select Correct Bit
✔ Sanding band or medium carbide (for product only)
✔ Safety bit for cuticle area refinement
✔ No carbide on natural nail
3. Set RPM
✔ 5,000–8,000 for prep
✔ 10,000–15,000 for removal
✔ Never max RPM
4. Light Touch Technique
✔ Glide
✔ No pressure
✔ Keep moving
5. Correct Angle (Not Flat, Not Vertical)
✔ 30-degree angle
✔ Prevents digging into surface
6. Remove Bulk or Shape Enhancement
✔ Use carbide or ceramic
✔ Work side to side
7. Cuticle Area Refinement
✔ Use safety bit
✔ Low RPM
✔ Light pressure
8. Switch to Hand File for Fine Shaping
9. Clean & Disinfect Bits
✔ Wash debris
✔ Disinfect
✔ Air-dry fully
❤️ LBA MINDSET MOMENT
Electric filing is a sign of skill.
But it is also a sign of care.
At Louisville Beauty Academy:
YES I CAN™ work slowly.
YES I CAN™ work gently.
YES I CAN™ use the correct bit.
YES I CAN™ stay safe and professional.
YES I CAN™ protect my client and my license.
Soon I WILL say: I HAVE DONE IT™.”
📝 50 LICENSING-STYLE QUESTIONS — CHAPTER 13
- What does RPM mean?
- What is a mandrel bit used for?
- What holds sanding bands?
- Why are sanding bands single-use?
- What is a safety bit?
- Why use a safety bit?
- What happens if carbide touches natural nail?
- What is a heat spike?
- How do you avoid heat spikes?
- What is a ring of fire?
- Why avoid pressure during e-filing?
- What is torque?
- Why is torque important?
- Which direction do right-handed techs use?
- Why must bits be disinfected?
- Why wear a mask?
- Why use a dust collector?
- What is the correct angle for e-filing?
- Why avoid staying in one spot?
- Why must enhancement bulk be removed gently?
- Why not use carbide on natural nails?
- What bit removes acrylic quickly?
- What bit creates less heat?
- What is a diamond bit used for?
- What happens when RPM is too high?
- Why is forward/reverse important?
- Why is light touch necessary?
- When should service be stopped?
- Why must bits be fully dry before use?
- Why check client sensitivity?
- Why avoid skin contact?
- What is the purpose of e-filing?
- Why hand file after e-filing?
- Why avoid using e-file on thin nails?
- Why prepare workstation first?
- Why match bit to task?
- Why avoid sanding natural nail aggressively?
- When should sanding band be replaced?
- Why clean underside of enhancement?
- What prevents lifting during fill?
- Why reduce bulk before refill?
- Why avoid using wrong direction?
- Why use low RPM near cuticle?
- Why disinfect after each client?
- What causes rings of fire?
- Why avoid over-filing sidewalls?
- What must be done after e-filing?
- Why check bit tightness?
- Why keep tools organized?
- What is the LBA mindset for e-filing?
📝 ANSWER KEY — CHAPTER 13
- Revolutions per minute
- Holding sanding bands
- Mandrel
- For sanitation
- Rounded-top bit
- Protects cuticle area
- Damage to nail
- Heat from friction
- Keep moving, light pressure
- Red painful ring
- Avoid heat and injury
- Power behind rotation
- Prevent bit stoppage
- Forward
- Prevent infection
- Inhale less dust
- Remove dust
- 30-degree angle
- Prevent heat
- Avoid damage
- Too strong
- Carbide
- Ceramic
- Smoothing
- Loss of control
- Matches hand direction
- Prevents injury
- If bleeding or pain
- Prevent rust or contamination
- Prevent discomfort
- Prevent irritation
- Remove or shape product
- Smooth finish
- Risk of thinning
- Safety
- Correct performance
- Protect natural nail
- After every client
- Clean appearance
- Clean cuticle area
- Balanced structure
- Causes bouncing or injury
- Safety
- Sanitation
- Too much pressure/speed
- Weak structure
- Disinfect bits
- Prevent wobbling
- Efficiency and safety
- YES I CAN™ work safely, gently, and professionally with e-files.
To access the full announcement and explore all 50 chapters of THE COMPLETE NAIL LICENSING MASTER BOOK, visit:
This book is LBA’s gift to the world — a fully public, free, humanized educational resource built to uplift every learner.
YES YOU CAN.
YES YOU WILL.
YES YOU HAVE DONE IT.
