Built in Public • Community-Driven
Hey, I'm Thomas.
Founder of The Strap Forge — Belgium

Like many of you, I bought the Amazfit Helio Strap because it was one of the best recovery trackers for the price. No screen, no distractions, just data. But every time I looked at my wrist, the same thought came back: this thing is ugly. The strap felt cheap, the velcro kept loosening at night, and wearing it during the day? Forget it. It looked like a basic fitness tracker from 2015.

So I did what any reasonable person would do, I designed my own adapter. The first version was 3D-printed in PLA,. I shared it for free on Reddit and Printables. The response was immediate: people wanted it, they had suggestions, and most importantly, they kept asking the same question,  "When is the metal version coming?"

That question pushed me further than I ever planned to go. I spent weeks learning CAD blueprints, testing lost wax casting (too imprecise), trying electroplating (peels off with sweat), until I finally landed on CNC-machined aluminum. AL6063-T5, sandblasted, anodized,, the same material and finish you'd find on a MacBook. Light enough to forget you're wearing it, tough enough for 24/7 use.

The Strap Forge is not a company with investors, a marketing department, or a warehouse full of stock. It's me, working with a small CNC supplier, and a community that tells me exactly what to build next. Every color, every product, every decision.  it starts with your feedback. The Sandy White finish? You asked for it. The arm band? You asked for that too.

This project exists because of Reddit. It was born in r/amazfit, validated through comments and DMs, funded by early orders, and improved through honest feedback.  I'm here to make the Helio Strap worth wearing every day — and to do it transparently, one update at a time.


Thomas — The Strap Forge
You decide what comes next.
Vote for the next colors, products and features. This project is built by and for the community.
Get early access to new releases + 15% off your next order.
Take the Survey

Latest Update

March 14, 2026Arm Band & Sandy White Now Available Update +

Two new products are now live on the store!

Arm Band: A nylon arm band designed for comfortable all-day wear on the upper arm or bicep. Adjustable, 45cm total length, fits 24cm to 42cm. Available in Black.
Sandy White: A new premium anodized finish joining Gold, Black and Silver.

Both were heavily requested by the community. You ask, we build.

The full journey, step by step

From Prototype to Product

March 8, 2026Major Ops Overhaul — Warehouse Live, Prices Drop Update +

March 8, 2026 marks a major operational turning point for The Strap Forge.

Shipping is now 6 EUR worldwide — down from 15 EUR (Europe) and 25 EUR (US). Tracking included on all orders. Free shipping over 60 EUR.

Price Drop: The bundle price has been lowered from 29 EUR to 24 EUR.

The PLA version has been discontinued. The range is now exclusively CNC aluminum.

January 21, 2026Bulk Order Shipped — Full Transparency Report Email +

Good news — Full bulk order received. All orders up to #1173 shipping immediately.

Buckles — Quality Upgrade

Standard buckles replaced with CNC-machined buckles — same quality as the aluminum case. Redesigned from 5-axis to 3-axis CNC for lower costs.

Quality Control

Every single case checked by hand. Minor sanding marks on some black units — invisible once sensor is installed.

Shipping by Region

USA: Upgraded to Economy Package. Import duties covered.
EU: Upgraded to tracked shipping.
Rest of World: Upgraded to Economy Package (28–35 EUR real cost — no profit).

Thomas

December 13, 2025Product Live — Metal Adapter Now Available Email +

Everything is ready and available on the website!

Bonus: Black case version added (limited quantity).

First come, first served. ~6 weeks production lead time.

Product page

Thomas

December 9, 2025Survey Results — Price Drop & Complete Pack Confirmed Email +

Over 200 survey responses!

1. Price Drop confirmed.

2. Found a supplier for high-quality bands (same as Polar).

COMPLETE PACK: Premium Metal Adapter + Metal Buckle + High-Quality Strap.

Thomas

December 3, 2025Metal Version Ready — CNC Aluminum Prototypes Complete Email +
After weeks of R&D, the Metal Version is ready!

Why CNC Aluminum?

  • Lost Wax Casting: Tolerances too loose.
  • Electroplating: Chips and peels with sweat.
  • CNC Aluminum (AL6063-T5): Precision, hyper-light, robust.

Colors: Silver (clean) and Gold (jewelry). Prototypes cost $300 — bulk brings it down.

Reddit post | Video

November 2025[Update: v2] Premium Metal Version Announced on Reddit Reddit +

Posted on r/amazfit

Fully metal CNC Aluminum version. Light, premium MacBook-style finish, fits perfectly.

200 emails asking "When is the metal version coming?" — here it is.

Interest check form

October 2025The Beginning — Helio Strap Loop Adapter (PLA Prototype) Reddit +

Posted on r/amazfit — Where it all started

Couldn't find a decent-looking band for the Helio Strap. The design isn't exactly "fashion-friendly".

Made my own adapter inspired by the Polar Loop design. Prototyping in 3D-printed PLA.

What do you guys think?