Viking 350 Ultrasonic Drill
Viking 350 Precision holes in precious and semi-precious stones
Manual equipment for delicate holes from 0.5 mm to 3.0 mm in diameter in stones, without risk of cracking or chipping the material. Ideal for handmade jewelry and precision lapidary work. 100% Brazilian manufacturing, with a 1-year warranty.

What is the Viking 350 Ultrasonic Drill
Precision holes in stones, with no risk of cracking
The Viking 350 Ultrasonic Drill is manual equipment designed for delicate holes in precious and semi-precious stones, suitable for handmade jewelry and precision lapidary work.
Unlike a conventional rotary drill bit, ultrasonic drilling uses high-frequency vibration combined with an abrasive (emery powder) to gradually wear away the material, without the mechanical impact of a bit spinning at high speed. This drastically reduces the risk of cracking or chipping fragile stones during drilling.
It’s a manually operated machine, which lets the artisan position the hole anywhere on the stone with full control — ideal for jewelry pieces where the exact hole position is part of the design.
How it works
- 1
The generator converts electrical energy into high-frequency mechanical vibration (ultrasound)
- 2
The sonotrode vibrates in contact with the stone, with abrasive (emery powder) at the contact tip
- 3
The vibration gradually wears away the material, without the impact of a regular rotary drill bit
- 4
The operator manually controls the position and depth of the hole in the stone
- 5
Clean, precise hole, from 0.5 mm to 3.0 mm in diameter, with no cracking of the piece
Drill or diamond drill bit?
Which equipment to choose for your hole
The choice between the Ultrasonic Drill and the Tubular Diamond Drill Bits mainly depends on the diameter of the hole you need to make.
Viking 350 Ultrasonic Drill
You are hereRecommended for small, delicate holes in precious and semi-precious stones, where the risk of cracking the material is the main concern. Manual operation, with full control over the hole’s position.
Tubular Diamond Drill Bits
Recommended for larger, faster holes in stones and glass, using rotary mechanical cutting. The tubular (hollow) shape helps dissipate heat and allows for larger-diameter holes at higher speed.
See Tubular Diamond Drill BitsWhat’s included
Viking 350 Ultrasonic Drill kit composition
Complete equipment, ready to use, with 220V installation.







Consumables used during operation: grit 180 emery powder, steel wires and 35% silver solder + silver flux. A jeweler’s torch is required to solder the wires.
Applications
Where the Viking 350 Ultrasonic Drill is used
From handmade jewelry to professional lapidary work: precision holes without compromising the stone’s integrity.
Handmade Jewelry
Delicate holes in precious and semi-precious stones for assembling jewelry and costume jewelry.
- Precious stones (emerald, ruby, sapphire)
- Semi-precious stones (agate, amethyst, quartz)
- Pearls and delicate materials
- Handmade jewelry pieces
Precision Lapidary Work
Precisely positioned holes in tumbled, rough, or already cut stones.
- River and sea tumbled stones
- Rough stones for accessories
- Custom design pieces
- Holes at multiple angles on the stone
Costume Jewelry and Accessories
Production of necklaces, bracelets and handmade accessories with fine, precise holes.
- Necklaces and pendants
- Bracelets with natural stones
- Handmade earrings
- Small-scale accessories
Why choose
Advantages of the Viking 350 Ultrasonic Drill
Ultrasonic drilling preserves the integrity of fragile materials, which conventional rotary drill bits cannot guarantee at this level of precision.
See it in action
The Viking 350 Ultrasonic Drill in operation
See the drill in use in practice, straight from our YouTube channel.
Part of the AALOK Group — over 40 years in industrial ultrasound
Viking do Brasil has been manufacturing ultrasonic machines since 1980 in Minas Gerais. The Viking 350 Drill follows the same quality standard as our full product line, with warranty, technical support and parts available directly from the manufacturer.
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