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Updating Readme BOM #64

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Updating Readme BOM #64

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0032cfd
Revise material BOM and improve formatting
jenwilsonglia Apr 15, 2026
a9c2585
Update silicone tubing descriptions in README
jenwilsonglia Apr 15, 2026
ed290e8
Merge pull request #1 from jenwilsonglia/jenwilsonglia-patch-1
jenwilsonglia Apr 15, 2026
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19 changes: 9 additions & 10 deletions README.md
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Expand Up @@ -23,22 +23,21 @@ Bill of Materials

**Other hardware:**
Some vendors are suggested.
* 40cm - 50cm Silicone 13mm (preferred) or 12mm OD, 8mm ID, 50 durometer
* [8MM I.D X 13MM O.D NGP60 Clear Translucent Silicone Hose Pipe Tubing](https://www.advancedfluidsolutions.co.uk/8mm-id-x-13mm-od-clear-transulcent-silicone-hose-pipe-tubing-2482-p.asp) (USD$7.34/meter)

* 20cm Silicone 8mm (preferred) or 6mm OD, 4mm ID (cut into 10cm pieces), 60 durometer
* [4mm ID x 8mm OD](https://www.advancedfluidsolutions.co.uk/4mm-id-x-8mm-od-clear-transulcent-silicone-hose-pipe-tubing-2454-p.asp)
*Translucent Silicone Rubber Tubing in US*
* 50cm length of Silicone tube - 8mm ID, 13mm OD, 50 durometer
* [8MM ID X 13MM OD (0.315" ID x 0.512" OD)](https://aerorubber.com/standard-tube-extrusions/)

* Diaphragm: 40mm diameter cut from a report cover with approx 0.35mm plastic sheet
* 20cm length of silicone tube (cut into 10cm pieces) - 4mm ID, 8mm OD, 50 durometer
* [4mm ID x 8mm OD (0.157" ID x 0.314" OD)](https://aerorubber.com/standard-tube-extrusions/)

*Diaphragm: 40mm diameter cut from a report cover with approx 0.35mm plastic sheet*
* [In Business Report Covers](https://www.amazon.com/dp/B0CJCBC86X?_encoding=UTF8&psc=1&ref_=cm_sw_r_ud_dp_CY0Q8HRSQEBTA39H9VF2)(USD$8.99)
* You can cut the diaphragm by hand or with a stamp like [this one](https://www.amazon.ca/Karujimu-ki-jumbo-craft-circle-CN45004/dp/B001CBY41W)

* Earbuds / Eartips: Any large-sized standard earbuds will do.
*Earbuds / Eartips: Any large-sized standard earbuds will do*
* [Silicone Earbuds 7 Pairs - Large size](https://www.amazon.ca/gp/product/B006VELFJY)

**Optional hardware**:
* Metal spring for holding ear tubes together


Print Instructions
==================
Expand Down Expand Up @@ -66,7 +65,7 @@ Notes

* We do not use brims, but you may print the eartubes and Y-pieces with a brim of 2mm to ensure that none of the parts lift off.

**INFILL MUST BE 100%** **INFILL MUST BE 100%** **INFILL MUST BE 100%.** Otherwise, the stethoscope will not produce a correct sound.
**INFILL MUST BE 100% Otherwise, the stethoscope will not produce a correct sound!**


Assembly Instructions
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