Brackets and mounts
Parametric UPS Project Case (Main Case + Battery Holder + Lid)
- Bounding box
- 253 × 119 × 52 mm
- Engine
- 3D Printing B-rep
- Parameters
- 29
- Published
- November 11, 2026
Download
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The prompt
Create a complete 3D printable parametric project containing 3 separate parts: a Main Case, a Removable Battery Holder, and a Top Lid. 1. MAIN CASE: Internal length is 72mm, total internal width is 115mm, internal height is 50mm. Wall thickness is 2mm. A vertical partition wall divides it into two sections: left section (width 58mm) and right section (width 55mm). Inside the right section (for the CA403C UPS board), add 4 cylindrical mounting standoffs on the bottom floor. Each standoff must be 5mm high, 5mm in diameter, with a 2mm center hole for M2 screws, spaced to fit a standard 65x42mm PCB. On the front wall of the right section, add two precise circular holes (8mm diameter each) aligned with the board's DC-jack connectors for external cable access. 2. REMOVABLE BATTERY HOLDER: A separate inner cassette box designed to fit perfectly inside the left section (dimensions 71x57x48mm). It must have a horizontal shelf inside at 19mm height. The lower floor fits 3pcs of 18650 batteries horizontally, and the upper floor fits 6pcs of 18650 batteries. Side walls should have a 5mm slot for battery wire routing. 3. TOP LID: A simple flat cover (119x76mm, 2mm thick) with a 3mm internal alignment lip to securely close the main case.
Parameters
| Name | Value | Range |
|---|---|---|
| Internal length X | 72 mm | 20 – 200 |
| Internal width Y | 115 mm | 30 – 250 |
| Internal height Z | 50 mm | 20 – 150 |
| Wall thickness | 2 mm | 1.2 – 5 |
| Divider wall thickness | 2 mm | 1.2 – 5 |
| Left battery section width Y | 58 mm | 20 – 200 |
| Standoff diameter | 5 mm | 3 – 10 |
| Standoff height | 5 mm | 2 – 15 |
| M2 pilot hole diameter | 2 mm | 1.6 – 4 |
| PCB length X | 65 mm | 20 – 150 |
| PCB width Y | 42 mm | 20 – 150 |
| PCB hole inset from edge | 3.5 mm | 2 – 10 |
| Cable hole diameter | 8 mm | 3 – 20 |
| Cable hole height above floor | 10 mm | 5 – 45 |
| Spacing of the two holes | 30 mm | 10 – 50 |
| Cassette length X | 71 mm | 20 – 200 |
| Cassette width Y | 57 mm | 20 – 200 |
| Cassette height Z | 48 mm | 20 – 150 |
| Cassette wall thickness | 1.6 mm | 1.2 – 4 |
| Shelf top height above base | 19 mm | 5 – 120 |
| Shelf thickness | 2 mm | 1.2 – 6 |
| Wire routing slot width | 5 mm | 2 – 12 |
| Lid length X | 76 mm | 20 – 250 |
| Lid width Y | 119 mm | 20 – 250 |
| Lid plate thickness | 2 mm | 1.2 – 6 |
| Alignment lip height | 3 mm | 1 – 10 |
| Alignment lip thickness | 2 mm | 1.2 – 5 |
| Lip clearance to case wall | 0.3 mm | 0.1 – 0.6 |
| Gap between exploded parts | 15 mm | 5 – 60 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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