Stemer114

/* this module makes use of the polyhole library function by nophead (MCAD library)
 * MCAD Library - Polyholes Copyright 2011 Nophead (of RepRap fame)
 * It is licensed under the terms of Creative Commons Attribution 3.0 Unported.
 * https://github.com/SolidCode/MCAD/blob/master/polyholes.scad
 */
function polyhole_hollow_eps() = 0.1; //epsilon environment for non-manifold differences
module polyhole_hollow(
        h=10,
        do=10,   //outer diameter
        di=8     //inner diameter

Stemer114

//two polyholes (d1, h1 and d2, h2) stacked on top of each other
//can be used for modelling cutouts for cylinder head screws, bearings with axle bore etc.
//out of solid components
module stacked_polyholes(
        d1 = 5,   //first polyhole (bottom)
        l1 = 10,
        d2 = 10,  //second polyhole (stacked on top)
        l2 = 20,
        lS = 0   //optional support layer in betwenn (set this to layer thickness for upside down printing)
        )

Stemer114

// slot hole, asymmetric (different dias at ends)
module slot_hole_asymmetric(
        w1 = 5,  //dia left
        w2 = 5, //dia right (if different)
        l = 20,  //length
        h = 5  //thickness
        )
{
    hull() {
        //left

Stemer114

//counter-sunk screw
//(standing upside down on its head)
//defaults are for 3x20mm torx screw
module countersunk_screw(
        l=20,   //total length (including head)
        dH = 6,  //head dia
        lH = 3,  //head length
        dB = 3.2, //bolt dia (with tolerance) 
        lS = 0   //support thickness if any (set this to layer thickness for upside down printing)
        )

Stemer114

//metric nut traps (M3 .. M4)
//see https://gist.github.com/Stemer114

// you can use the param functions for e.g. translation ops
// (access to height, thickness etc.)
function nut_trap_eps() = 0.1;        //epsilon environment for non-manifold differences
function nut_trap_m3_w()      = 5.5;  //M3 wrench size
function nut_trap_m3_h()      = 3;    //M3 nut thickness
function nut_trap_m3nyloc_h() = 4.1;  //M3 nyloc nut thickness
function nut_trap_m4_w()      = 7;    //M4 .. (and so on)

Stemer114

/* this module makes use of the polyhole library function by nophead (MCAD library)
 * MCAD Library - Polyholes Copyright 2011 Nophead (of RepRap fame)
 * It is licensed under the terms of Creative Commons Attribution 3.0 Unported.
 * https://github.com/SolidCode/MCAD/blob/master/polyholes.scad
 */
module polyhole_half(
        h=10,
        d=10
        )
{

Stemer114

/*
 * module template for creating complex structures in openscad
 * uses a difference of two unions
 * the first union contains all openscad entities that make up the 
 * outline of the object
 * the second union is for shaping by cutting away
 */
module foo()
{
    difference()

Stemer114

/*-----------------------------------------------------------------------------------

 simple template for scad models without flags or params
 (c) 2015 by Stemer114 ([email protected])
 http://www.thingiverse.com/Stemer114/designs
 License: licensed under the 
          Creative Commons - Attribution - Share Alike license. 
          http://creativecommons.org/licenses/by-sa/3.0/

 Credits: 

Stemer114

// screw with hex head
// useful for modelling attachment bores
// with nut trap
// default values are for M3 (5.5mm head) screw 20mm (3.2mm bore for tolerance)
// param membrane thickness is for additional layer between head and shaft,
// for upside down printing, usually set this to your layer thickness
module hexhead_screw(
        length=20,   //per definition, excluding head 
        head_wrenchsize = 5.6,  
        head_thickness = 3,    

Stemer114

// right triangle
// side a oriented in x direction
// side b oriented in y direction
// height is in z direction
module right_triangle(
        a = 10,  //side a (x direction)
        b = 10,  //side b (y direction)
        thickness = 5  //thickness (z-direction)
        )
{