CNC Machined Anodized Tattoo Machine Frame
Tattoo machine frames machined from 6061-T6: 75 × 32 × 22 mm, a Ø10 H7 armature bore round within 0.008 mm, faces parallel to 0.02 mm, a 6 mm slot at ±0.03 mm and two M4 threads. Each frame is balanced to within 0.5 g and anodized in a sealed pink that resists hand oils and cleaning agents.
- Bore Ø10 H7 ±0.01
- Faces Parallel 0.02
- Weight 42 g
- Anodized 20 µm
*Send the armature diameter and the grip thread. A bore 0.015 mm tight will bind the armature when the frame warms up in the hand, and the machine will run hot within a minute.
Anodized Machine Frame Overview
A hand-held machine frame has to hold an armature true, stay balanced in the hand and survive constant contact with skin, sweat and cleaning fluid. The bore and the grip faces are the two features that decide whether it runs smoothly, and both are cut from one set-up.
The frame is profiled from solid, the armature bore is bored and reamed to H7, and the grip faces are fly-cut so they stay parallel to the bore axis. The frame is weighed and balanced before anodizing, because coating adds about 0.6 g and that is enough to change the feel.
6061-T6 Aluminium
6061-T6 gives a 42 g frame that dampens vibration better than a plastic shell and takes a sealed anodized finish that withstands alcohol wipes.
7075-T6 or Titanium
7075-T6 is used when the frame is machined thinner for a lighter feel, and Grade 5 titanium is chosen for premium frames where the anodized colour is produced by oxidation of the metal itself.
A wall under 3 mm at the grip will flex under hand pressure and change the armature clearance; the wall is kept at 4 mm.
Tattoo Machine Frame Specifications
Bore, balance and finish values for a frame that is held, not bolted.
| Specification | Machining Data | Specification | Machining Data |
|---|---|---|---|
| Product | Tattoo Machine Frame | Process | CNC Milling, Boring, Profiling |
| Material | 6061-T6 Aluminium | Envelope | 75 × 32 × 22 mm |
| Armature Bore | Ø10 H7, Roundness 0.008 mm | Bore Position | ±0.02 mm |
| Face Parallelism | 0.02 mm | Wall Thickness | 4 mm ±0.05 mm |
| Slot Width | 6 mm ±0.03 mm | Threads | 2 × M4 × 0.7, 8 mm Deep |
| Weight | Approx. 42 g | Edge Break | 0.3 mm on Handling Edges |
| Anodizing | Pink, 18 to 22 µm, Sealed | Balance | Mass Centred Within 0.5 g |
| Inspection | Bore Gauge, Balance Check | Batch Size | 25 to 2,000 Pieces |
| Finish | Anodizing, Colour Matched | Drawing Format | STEP, DXF, PDF |
Bore, Balance, Feel
Bored and reamed in one clamping, balanced before coating.
Bore Bored and Reamed to H7
The armature bore is drilled, bored and reamed in a single clamping, giving 0.008 mm roundness so the armature turns without a tight spot at one point of its rotation.
Grip Faces Fly-Cut Parallel
Both grip faces are fly-cut after profiling and stay parallel to the bore axis within 0.02 mm, so the frame does not rock in the hand and the grip sits square.
Balanced Before Anodizing
Each frame is weighed and material is relieved from the rear boss until the mass centre is within 0.5 g, which is the difference between a frame that feels neutral and one that pulls.
Sealed Anodizing
The pink coating is sealed in a hot bath after dyeing, so it resists alcohol and disinfectant instead of fading at the grip within a few weeks of use.
Frame that has to run smooth in the hand?
Surface Finishes for Machine Frames
Colour and sealing matter as much as the coating thickness here.
| Finish | Main Purpose | Finish | Main Purpose |
|---|---|---|---|
| Pink Anodizing | Product identity, sealed surface | Black Anodizing | Low-reflection frames |
| Clear Anodizing | Neutral machined look | Hard Anodizing | Wear face at the grip |
| Bead Blasting | Matte before colour | Laser Marking | Serial under the grip |
| Masked Bore | Bare bore for the armature | Chromate Conversion | Conductive frame for grounding |
| Colour Match | Frame and grip in one shade | Ultrasonic Clean | Compound removal before sealing |
| Deburr Only | Frames that will be polished | Foam Packing | No contact marks in transit |
*An unsealed dye will fade where the hand contacts the frame; every frame is sealed, and the bore is masked so the armature fit is unchanged.
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How We Machine a Machine Frame
The armature bore and the grip faces are cut in one clamping, so the armature runs true and the frame does not buzz against the grip.
01. Armature and Grip Review
Check the armature diameter, the grip thread and the spring travel, then set the bore tolerance and the slot position from the drawing.
02. Profile the Frame
Profile the outer shape from solid with a 10 mm end mill, leaving 0.3 mm on the grip faces and the bore boss for finishing.
03. Bore and Ream
Drill the armature bore undersize, bore it to 0.05 mm under H7 and ream to size, checking roundness and bore position against the datum.
04. Fly-Cut Faces and Balance
Fly-cut both grip faces parallel to the bore, cut the 6 mm slot, tap the M4 threads and relieve the rear boss until the frame balances.
05. Anodize, Seal, Check
Deburr all edges, pink anodize, seal in a hot bath, then re-check the bore and the balance after coating.
Send the armature diameter and the grip drawing, and we will quote a frame with the bore reamed to H7 and the balance set before anodizing.
Tattoo Machine Frame FAQs
Yes, from a sample or a drawing. The armature bore, the grip thread and the slot position are the three features that have to match, and we copy them from the part.
It is weighed on a balance stand and material is removed from the rear boss in small steps until the mass centre sits within 0.5 g of the grip axis.
The bore is masked, so the H7 fit stays. If the bore is coated for wear, it is reamed back to H7 after anodizing.
The full anodizing range, including pink, black, clear, blue and gold. Custom dye lots are possible above 200 frames.
Yes, in Grade 5, with the colour produced by anodizing the titanium itself. The lead time is longer and the cost is roughly three times the aluminium frame.
H7 on the bore with the armature ground to h6 gives a light running fit. The clearance is agreed from the armature drawing before machining.
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