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Knee rests and an amplifier for the O'Cello

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  • Knee_rests_and_amplifier.pdf
  • amplifier_panel.stl
  • bridge_for_pickup.stl
  • knee_rest_holder_w_panel.stl
  • knee_rest_holder_w_panel_bot.stl
  • knee_rest_holder_w_panel_top.stl
  • knee_rest_new_L.stl
  • knee_rest_new_R.stl

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Publication date 2024-01-17 at 15:57
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Published to Thingiverse on: 2018-04-15 at 19:59
Design number 1719387
petercb

petercb

3D printer file info

3D model description

Remixed from - The O’Cello by cokane http://www.thingiverse.com/thing:1703629
and - AddOns by Zarlor http://www.thingiverse.com/thing:1833270

I did a slight remodelling of the knee rest pads by ZARLOR and used 12mm carbon fiber tubing instead of aluminum profiles, and added panels for an amplifier with tone control for headphones and line-out

https://www.aliexpress.com/item/Electric-Violin-Pickup-Adjustable-Pickup-Piezo-Pickups-EQ-Parts-Accessories-20-12/32849083156.html?spm=a2g0s.9042311.0.0.4WJWD8

Similar tubes to those I used - for the knee rest ONLY -
https://www.aliexpress.com/item/2pcs-3K-Pure-Carbon-Fiber-12MM-OD-X-10MM-ID-Tube-500MM-Long-Roll-Wrapped-Tube/32750177570.html?ws_ab_test=searchweb0_0,searchweb201602_4_10152_10065_10151_10344_10068_5722815_10342_10547_10343_10340_10341_10548_5722915_10698_10697_5722615_10696_10084_10083_10618_10304_10307_10302_5722715_5711215_10059_5723015_10534_308_100031_10103_441_10624_10623_10622_5711315_5722515_10621_10620,searchweb201603_15,ppcSwitch_5&algo_expid=ea191c62-6732-408c-a59a-5e0a175b2fac-8&algo_pvid=ea191c62-6732-408c-a59a-5e0a175b2fac&priceBeautifyAB=0

For details on printing the parts and combining them with the O'Cello see the added PDF
Oh, you need to print both knee rests - they are not symmetric so there is a right and a left one...

Total weight of the instrument is now 1720g.
Total cost (including materials - PLA, 12mm carbon ROD, 12mm carbon tubes, tuners, strings, carbon bow, electronics and battery) was about $ 150 (in 2017)

Oh, reduce the length of both finger- and breast rests by at least 30 % - they are way too long to fit into a standard cello bag. Try your own way here

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