*"The first work of the DinoMech mechanical dinosaur series - the volcano multi-functional artifact: magnifying glass × night light × pen holder, awakening the aesthetics of prehistoric technology!" *

Core selling point description:

1. Prehistoric mechanical aesthetics × modern pragmatism
Mechanical volcano shape: Inspired by the erupting volcanoes in the dinosaur era, the rivets and layered structure replicate the industrial steampunk style, transforming the desktop into a "Jurassic laboratory" in one second.

Free switching of three-in-one functions:
2.5X professional magnifier (focal length 100mm, diameter 50mm, clear reading/model detail repair).
Retro Pen Holder: To store tools and brushes, a must-have for mechanical desks!
Modular design: No tools required, components can be replaced in 10 seconds, unlocking different scene needs.
Warm light LED electronic candle: simulates the soft light of lava flow, a nighttime atmosphere artifact.

3D printing friendly: The file contains multiple versions of adaptation (PLA/resin), supports DIY painting, and creates an exclusive mechanical world.

2. Not just a tool, but a topical piece of art
Table building artifact: Whether it is an engineer's workbench, a model player's display cabinet, or a game anchor's live broadcast room, it is the most eye-catching "mechanical heart".

Below are websites can be find the accesssories
2.5X professional magnifying glass:
50mm magnifier lenses, FL=100mm, around 2.5X magnification
https://www.aliexpress.com/item/1005004213353520.html?spm=a2g0n.home.rcmd.24.40e876dbES0HSM&gps-id=msiteJustForYou&scm=1007.33107.376995.0&scm_id=1007.33107.376995.0&scm-url=1007.33107.376995.0&pvid=b66c6733-56c4-4c09-8279-cb59645a7d54&_t=gps-id%3AmsiteJustForYou%2Cscm-url%3A1007.33107.376995.0%2Cpvid%3Ab66c6733-56c4-4c09-8279-cb59645a7d54%2Ctpp_buckets%3A668%232846%238109%231935&pdp_ext_f=%7B%22order%22%3A%2221%22%2C%22eval%22%3A%221%22%2C%22sceneId%22%3A%2223107%22%7D&pdp_npi=4%40dis%21HKD%215.78%214.69%21%21%210.74%210.60%21%402140f54217439235753186986ed28f%2112000028844475578%21rec%21HK%21221969242%21ABX&curPageLogUid=EMy14oV8MfEc&browser_id=7a670f52b9ee4989bd40100d39c68437&aff_trace_key=0396f7d8bacd4d588c125e4259919fed-1743923575364-08232-UneMJZVf&aff_platform=msite&m_page_id=reuvighurqwcavpp19609f1ed9358e509dee1ed610&gclid=Cj0KCQjwqcO_BhDaARIsACz62vOkc9BefLb5PlGKBYiTNdeFXqqMh37py0eT4nant283ZzjD4ggss48aAiyoEALw_wcB
Please select 50mm FL100mm

Warm light LED electronic candle:
https://www.aliexpress.com/item/1005006782534729.html?spm=a2g0n.productlist.0.0.758710426JXyLi&browser_id=7a670f52b9ee4989bd40100d39c68437&aff_trace_key=0396f7d8bacd4d588c125e4259919fed-1743923575364-08232-UneMJZVf&aff_platform=msite&m_page_id=reuvighurqwcavpp1960a00f583a852c445ac19671&gclid=&pdp_ext_f=%7B%22order%22%3A%2225%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21HKD%2110.74%218.59%21%21%219.98%217.98%21%402102f0cc17439245571561757e6183%2112000038280924749%21sea%21HK%21221969242%21ABX&algo_pvid=f1702549-6937-4559-aae2-a8be17ae3cb0

For the Focal Length with magnification formula,
The magnification factor (angular magnification) of the magnifying glass is calculated as:

[M = \frac{25\ \text{cm}}{f}]

Among them, ( f ) is the focal length of the magnifying glass, and the unit needs to be converted into centimeters. The focal length given in the question is ( 100\ \text{mm} = 10\ \text{cm} ), substitute it into the formula:

[M = \frac{25\ \text{cm}}{10\ \text{cm}} = 2.5]

Therefore, the magnification is 2.5x (i.e. ( 2.5\times )).

KEY POINTS:
Formula basis: Angular magnification is determined by the ratio of the human eye's near point distance (25 cm) to the focal length, and has nothing to do with the diameter of the magnifying glass.
Unit conversion: focal length ( 100\ \text{mm} = 10\ \text{cm} ) to ensure uniform units.
Diameter influence: The diameter of 50 mm mainly affects the field of view and does not change the magnification calculation.
Remind for assembly:
Before assembling the magnifier lenses, wear gloves and use cleanroom wipers to clean the dust spots on the lens surface. In addition, please must wear gloves when mounting lenses into the volcano body. Do not touch the lenses directly.

If have any questions please contact me. Thanks.

DINOMECH MECHANICAL DINOSAUR SERIES - THE VOLCANO

0.2mm layer, 2 walls, 15% infill