"Smooth long as much a part of me as any tool you should hang on to."verified buyer, 04/10/2026
6" Full-Round Swiss No4 Cut Impressioning File
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6" Full-Round Swiss No4 Cut Impressioning File
£ 1599
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Currently unavailable
6" Full-Round Swiss No4 Cut Impressioning File is backordered and will ship as soon as it is back in stock.
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About This Item
About This Item
Description
Description
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Impressioning file
A 6 inch full-round Swiss No4 cut file for key impressioning
This 6 inch full-round Swiss No4 cut impressioning file is for trained key impressioning work. The No4 cut gives a fine, controlled file choice for shaping blank keys during authorised bench practice.
6 inchfile
SwissNo4 cut
Fullround
Keywork
Why buy this
Buy this when impressioning needs a proper file
Impressioning is a precision skill. A purpose-chosen file gives you cleaner control on the blank than a general hardware file, especially when you are learning how marks, pressure and metal removal relate.
Fine cut
Swiss No4 cut is suited to controlled key work.
Full-round profile
Useful where a rounded file profile is the right shape.
Bench practice
A practical tool for trained impressioning and key-work learners.
Use route
Treat it as a precision bench tool
Use the file only with appropriate blanks and authorised locks. Work slowly, check often and avoid removing more metal than the job requires.
- Use for authorised key impressioning practice.
- Pair with correct blanks and careful marking.
- Keep file strokes controlled and deliberate.
Helpful next step: impressioning tools.
Product details
What to know before you choose
| Brand | UKBumpKeys |
| Product type | Impressioning file |
| Length | 6 inch |
| Cut | Swiss No4 |
| Profile | Full round |
Use lock picking and entry tools responsibly, only on locks you own or have permission to work on, and check local laws before buying.
Questions
Quick answers
Is this for beginners?
It is best for learners who are specifically studying impressioning.
Can I use any blank?
Use blanks that match the authorised lock and keyway.
Why No4 cut?
It gives a finer working feel than a coarse general file.
Is this a pick?
This is a key impressioning and key-work tool.
Use the right file for impressioning practice
A fine full-round file gives trained users the control needed for careful key work.
Payment & Security
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