700 × 2400 µm — straight channel (Fluidic 556)

Internal geometry — X-ray

See-through internal view. Left: fluid footprint in plan, true scale (teal); ports show as the wider circles. Right: isometric of the internal void, vertical z exaggerated 3× for visibility. The exterior is an opaque solid block — this is what is inside it.

Download: PNG (x-ray)

Longitudinal section & exterior

Longitudinal y=0 section of 700 × 2400 µm — straight channel (Fluidic 556): grey solid, white channel and bores

Exterior isometric render of 700 × 2400 µm — straight channel (Fluidic 556) (opaque block with two top bores)

Longitudinal section at y=0 (left): grey = solid, white = channel + bores. Exterior isometric (right): the outside of the CAD model, drawn opaque. Click either for full resolution.

Download: PNG (section) · PNG (top) · PNG (iso)

Description

A single monolithic block for resin SLA (Phrozen Sonic Mighty 12K, 19 × 24 µm non-square) with one straight rectangular channel 700 µm deep × 2400 µm wide, running the full 20 mm port-to-port at mid-height, a solid floor below and ceiling above, and two Ø1.5 mm vertical access bores to the top surface. The vendor part is a COC body sealed with a foil lid — this is a different physical construction that reproduces only the channel cross-section. Footprint 24.5 × 5.4 × 2.5 mm.

Verification

metric	value
Channel cross-section (H × W) — vendor	700 × 2400 µm
Channel length — OUR design	20 mm OUR DESIGN
Footprint (L × W × H) — OUR design	24.5 × 5.4 × 2.5 mm
Channel volume — analytic (nominal)	33.600 µL
Channel volume — measured on the model's mesh	34.272 µL
Δ (mesh − analytic)	+2.00% — uniform 0.4 mm boolean overrun; cross-section exact
Void watertight	True
Void connected bodies	1 — bore→channel→bore continuous
Chip watertight	True
Chip Euler number	0 — genus-1: one cavity, two vents
Min feature vs Phrozen 12K X (px_min = 700/19)	36.84 px
Min feature vs Phrozen 12K Y (px_min = 700/24)	29.17 px

All geometry checks run with trimesh (merged vertices) on the exported STLs. See the bundled README for the full method.

Source & print adaptation

Channel (source → ours): 0.70 × 2.40 mm (H × W) — as published; no print enlargement applied
Target printer: Phrozen Sonic Mighty 12K — 19 µm (X) × 24 µm (Y), non-square
Source: microfluidic ChipShop — straight-channel series (vendor product page)

Source dimensions are what the originating design publishes; ours are what our CAD model is drawn at. Where the two are the same number, no feature was resized to print. No public URL for the source is on record in this repository, so it is cited as plain text rather than linked.

Provenance & caveats

Vendor-attributed: only the channel cross-section (H × W = 700 × 2400 µm) is taken from the vendor product page. OUR design (not the vendor’s): the channel length (20 mm) and the footprint. The envelope is our design; the vendor technical datasheet is robots-blocked. Ports are simplified straight cylindrical bores, standing in for the vendor’s MFCS Mini Luer sockets. Status — Phrozen Sonic Mighty 12K design, checked in CAD: the geometry is watertight and volumetrically checked in CAD — see the Verification table above for the numbers.

Files to download

SCADchannelchip_f556.scad9.6 KBDownload
STLchannelchip_f556.stl207.0 KBDownload
STLvoid_channelchip_f556.stl205.2 KBDownloadFor inspection, not for printing: the fluid network, every space that holds liquid, as a solid.
PNGchannelchip_f556_xray.png161.8 KBDownload
PNGchannelchip_f556_section.png22.5 KBDownload
MDREADME.md2.5 KBDownload