SEIKO Movement Holder - - - - Lucius Atelier - Swiss Quality Seiko Watch Mod Parts

SEIKO Movement Holder

Name: SEIKO Movement Holder
Brand: Lucius Atelier
SKU: seiko_movement_holder
Price: 48.0 SGD
Availability: InStock

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$48 SGD

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The Movement Holder. 70g solid brass. For NH hands work.

Hands are a firm friction fit — they need square, steady pressure, and that starts with a movement that cannot shift. This is our heavy-duty holder for Seiko movements: 70 grams of solid brass with an adjustable pinion supporting the movement from the middle while you press. Version 4 — fitting, finishing and practicality all improved, and the movement now sits flush with the holder.

Sandblasted with stainless steel so the brass doesn't oxidise, and sized to sit snugly under professional hand-setting tools like the Bergeon 8935 and 6012-4-P. Works with or without a press — but the movement never moves.

Steady wins.
70g of brass between your hands and a bent pivot.

Solid brass, 70g.
Heavy enough to stay planted while you work — no chasing the movement around the bench.

Adjustable pinion.
Supports the movement from the centre while hands are pressed — V4 sits the movement flush.

Oxidation-proofed.
Sandblasted with stainless steel so the brass keeps its finish.

Bergeon-ready.
Sits snugly under professional hand setters — Bergeon 8935, 6012-4-P and kin.

Heads up — fit & use

Fits the Seiko movement families listed in Specs — NH, 4R, 6R, 7S and kin. Pairs with a proper hand-setting tool; the holder is the steady half of the job.

New to this? Seiko Modding: The Complete Build Guide walks through the whole build.

Specs
What's Included
Fitment
How To Mod

Specs
1. Quality Swiss Production Quality, ISO 9001 Certified
2. Material Brass
3. Surface Finish Brushed and Sanded
4. Surface Coat Sandblasted with stainless steel
5. Base Diameter 31mm
6. Height 16mm
7. Weight 70g
8. Fit Movements 7S26, 7S36, 4R15, 4R35, 4R36, 6R15, NE15, NH25, NH26, NH34, NH35, NH36, NH38, NH39
1. 1x Movement Holder
All photos of watches with modification parts are for illustration purposes only and are not included with the purchase.
Fits the Seiko movement families listed in Specs — NH, 4R, 6R, 7S and kin.

Pairs with:
1. Watch Hands
2. SKX013 Mod Parts
1. Seiko Modding: The Complete Build Guide (2026)

Do I need special tools to mod a Seiko?

About eight tools total: case knife, hand-removal lever, hand presser (paired with a brass movement holder), tweezers with plastic or wooden tips, 10×–20× loupe, microfiber cloths, rocket blower.

Why do I need a movement holder?

It clamps the movement so it can't shift while you work on it — most critically when pressing hands, which are a firm friction fit and need square, steady pressure. Setting hands against an unsupported movement risks bending a hand or the pinion it presses onto.

Do you sell crystal presses or hand-setting presses?

No — we stock the three tools on this page and stop there. For a crystal press or a hand-setting press, buy from a dedicated tool supplier or have a watchmaker do the pressing; a crystal in particular should never be seated without a proper press.

What does the spring bar tool do?

It compresses the spring bars that hold a strap or bracelet between the lugs, so you can swap straps without scratching the case. It works on any watch that uses standard spring bars — which is every Lucius Atelier case with lugs — and the spare tips keep it working after the inevitable slip.