OpenMFDA Foundry

Library / Reference Chips / Straight-channel chip, 700 × 1250 µm, 18 mm long

Straight-channel chip, 700 × 1250 µm, 18 mm long

channel_700x1250um_18mm

reference chip Phrozen Sonic Mighty 12K design, checked in CAD channel-chip 700 × 1250 µm

Ali Tahmasbizadeh, Gale Lab, University of Utah

Straight-channel chip, 700 × 1250 µm, 18 mm long. A computer render of the design, not a photograph: its body drawn see-through, its channels in orange. The chip is 22.5 mm × 4.5 mm × 2.5 mm. Beside it, its cross-section across the middle, and a 500 µm window around the channel, which is 1.25 mm wide and 700 µm deep there.
Rendered from its design files, not photographed: the body see-through, the channels orange, and its cross-section beside it. Pictures in one family share one scale.

Internal geometry — X-ray

X-ray see-through view of Straight-channel chip, 700 × 1250 µm, 18 mm long: plan footprint (true scale) and z-exaggerated isometric of the internal channel and two bores

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 Straight-channel chip, 700 × 1250 µm, 18 mm long: grey solid, white channel and bores Exterior isometric render of Straight-channel chip, 700 × 1250 µm, 18 mm long (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 with one straight rectangular channel 700 µm deep × 1250 µm wide, running the full 18.0 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. Footprint 22.5 × 4.5 × 2.5 mm.

Verification

metricvalue
Channel cross-section (H × W) — target700 × 1250 µm
Channel length — target18.0 mm
Footprint (L × W × H)22.5 × 4.5 × 2.5 mm
Channel volume — analytic (nominal)15.7500 µL
Channel volume — measured on the model's mesh16.1000 µL
Δ (mesh − analytic)+2.22% — uniform 0.4 mm boolean overrun; cross-section exact
Void watertightTrue
Void connected bodies1 — bore→channel→bore continuous
Chip watertightTrue
Chip Euler number0 — 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
Min feature vs BYU Nordin (px_min = 700/7.6)92.11 px

All geometry checks run with trimesh (merged vertices) on the exported STLs. See the bundled README for the full method. The minimum-feature rows are pixel counts; for each printer’s process limits, see Hardware and process.

Credits

Design: Ali Tahmasbizadeh, Gale Lab, University of Utah.

Files to download

  • SCADchannel_700x1250um_18mm.scad9.8 KBDownload
  • STLchannel_700x1250um_18mm.stl172.0 KBDownload
  • STLvoid_channel_700x1250um_18mm.stl170.0 KBDownloadFor inspection, not for printing: the fluid network, every space that holds liquid, as a solid.
  • PNGchannel_700x1250um_18mm_xray.png135.2 KBDownload
  • PNGchannel_700x1250um_18mm_section.png20.0 KBDownload
  • MDREADME.md1.1 KBDownload

Tags

  • channel-chip
  • not-tested
  • straight-channel
  • sla-print
  • continuous-flow
  • platform-agnostic
  • scad-source
  • stl-included
  • 700x1250um

Citation

Ali Tahmasbizadeh, Gale Lab, University of Utah

Monolithic SLA design: one straight channel, 700 µm deep × 1250 µm wide, 18 mm long.