Airplane Grip with PTT and Trim Button

prusaprinters

<p><i>I suggest to use the new Prusa Slicer Fuzzy surface for the grip section. It makes them really grippy and look even better. See last image.</i></p><p>&nbsp;</p><h4>tl;dr</h4><p>You probably want the version with the square trim button. There are version with right, left or both hand rests. Order the PTT button <a href="https://www.mouser.com/ProductDetail/OTTO/P1-12121?qs=eCoE1eeZ%2F987PJxL5p9PSw%3D%3D">here</a> and the trim button <a href="https://www.mouser.com/ProductDetail/E-Switch/300SP4R7BLKM1QEBLK?qs=f57gQzlyLipI0vWmFmq%252BnA%3D%3D">here</a>. Add a M3 40mm screw, shorten it slightly and melt in an M3 insert. Done.&nbsp;</p><p>&nbsp;</p><h4>Long Version</h4><p>Objective was to print a simple grip with place for two buttons: PTT and trim. The buttons are friction locked and can be removed through a 3 mm hole with something like a T-handle hex key. There is an ~40mm M3 screw that holds the grip in place on the stick and an M3 insert on the other side. Inserts are a little more work to create but you will avoid have a tiny M3 nut lost in your cockpit. It has a hand rest and i'm rendering the models with left, right and both side hand rests. There are also two versions, one with space for a round and one with space for a square fit trim button. The PTT button on the left is the same in both versions.&nbsp;</p><h5>&nbsp;</h5><h5>Hardware Parts</h5><p>Here is a list of hardware parts needed to build this:</p><ul><li>M3 x 40mm hey screw (need to be shorted a tiny bit)</li><li>M3 3D printing insert similar to <a href="https://hackaday.com/2019/02/28/threading-3d-printed-parts-how-to-use-heat-set-inserts/">these</a>&nbsp;</li></ul><p>&nbsp;</p><h5><strong>PTT Button</strong></h5><p>The PTT button is from Otto Control and comes in different versions. There are red, black and white caps. This design needs the pressfit version. You can find them at Aircraft Spruce or Mouser and will cost you about $23.&nbsp;</p><ul><li>OEM page at Otto Control, version number is P1-1 (<a href="https://www.otto-controls.com/p1-sealed-mil-prf-8805-3-momentary-snap-action-pushbutton">Source</a>)</li><li>Purchase at Aircraft Spruce, order the press fit versions (<a href="https://www.aircraftspruce.com/pages/av/ptt/p1momswitch.php">Source</a>)&nbsp;</li><li>Purchase at Mouser, Anything that starts with “P1-1” will fit (<a href="https://www.mouser.com/c/?q=OTTO%20P1-1">Source</a>), check the OEM info what the PN numbers mean of just order a red capped button with screw terminals "P1-12121 (<a href="https://www.mouser.com/ProductDetail/OTTO/P1-12121?qs=eCoE1eeZ%2F987PJxL5p9PSw%3D%3D">Source</a>)</li></ul><p>&nbsp;</p><h5>Round Trim Switches&nbsp;</h5><p><i>Warning: These switches appear to be only rated at logic level current. Proceed with caution and make sure to know what you are doing</i></p><p>The round one fits various aviation grade ones from Otto Control, they cost in the $80 - $110 region. You can fit both 2 way and 4 way trim switches.&nbsp;</p><ul><li>OEM page at Otto Control, 2-way switches (<a href="https://www.otto-controls.com/t1-2-way-mini-trim">Source</a>) and 4 way switches (<a href="https://www.otto-controls.com/t4-4-way-mini-trim">Source</a>), only press fit versions will fit</li><li>Purchase 4 way switch at Aircrafts Spruce (<a href="https://www.aircraftspruce.com/catalog/elpages/cag11-14198.php">Source</a>)</li><li>Purchase 4-way switch at Mouser (<a href="https://www.mouser.com/ProductDetail/OTTO/T4-CG1112?qs=q7YjwOswUuHsSL4NGl5gFg%3D%3D">Source</a>)</li><li>Purchase 2-way switch at Mouser (<a href="https://th.mouser.com/ProductDetail/999-T1-CC1212">Source</a>)</li></ul><p>&nbsp;</p><h5>Square Trim Switches&nbsp;</h5><p>The square one is for a very specific consumer grade rocker switch that cost you a much more affordable $6. It has a nice tactile feedback and is rated up to 5 Amps. The manufacturer is “E-Switch” and the item number is for the black one is "300SP4R7BLKM1QEBLK"</p><ul><li>OEM Infos E-Switch (<a href="http://spec_sheets.e-switch.com/specs/T314040.pdf">Source</a>)</li><li>Purchase at Mouser (<a href="https://www.mouser.com/ProductDetail/E-Switch/300SP4R7BLKM1QEBLK?qs=f57gQzlyLipI0vWmFmq%252BnA%3D%3D">Source</a>)</li><li>Purchase at Digikey (<a href="https://www.digikey.com/en/products/detail/e-switch/300SP4R7BLKM1QEBLK/1803826">Source</a>)</li></ul><p>&nbsp;</p>