Nabble has removed Mailing-list integration.
Posts created here DO NOT GET SENT TO THE MAILING LIST.
Mailing-list emails DO NOT GET POSTED TO THE FORUM.
So basically the Forum is now out of date, we are looking into migrating the history.

# 3D printing project need help with a pattern Classic List Threaded 5 messages Open this post in threaded view
|

## 3D printing project need help with a pattern Hello, everyone I have a problem with something. I need to make a honeybee foundation for 3D printing. I had already done the honeycomb part of my project to OpenSCAD but i face difficulties when i try to make the foundation.The foundation consists of a hexagon that has to bottom of it cut with a cube or something( still cant figure out the shape that needs to be cut from) that creates 3 faces at an angle pointing towards the center of the hexagon. I have uploaded an image on a plastic honeycomb foundation. What is the method i will have to use to create that foundation? Here is the code for the honeycomb cells, someone might find it useful or you guys might give me pointers on how to optimize the code. I started using OpenSCAD last week for the first time so don't judge me too harsh. Thanks in advance. \$fn= 6; a = 2.658; y = 6.3; d = 7.3; row = 16; column = 38; difference() { difference()                //outer frame {         minkowski()         { color( [ 255/255, 0/255, 0/255 ] ) translate( [ 135.5 , -96, 0.001 ] ) cube( [ 301, 216, 12 ], center = true ); //compensated dimentions for the R2 fillet on the next line                 cylinder( h = 0.0001, d = 4, \$fn = 200, center = true);         }         minkowski()         { translate( [ 135.5 , -96, 6.6 ] ) cube( [ 277, 210, 11 ], center = true );//compensated dimentions for the R2 fillet on the next line                 cylinder( h = 0.0001, d = 4, \$fn = 200, center = true );         } } //holes on the left //first hole from the top translate( [ -12, 1, -1] ) rotate( [ 90, 0, 90 ] ) cylinder( h = 11, d = 3.6, \$fn = 200, center = true ); //square instert translate( [ -10, 1, -1.5 ] ) cube( [ 2.6, 6, 9 ], center = true); //second hole from the top translate( [ -12, -49, -1] ) rotate( [ 90, 0, 90 ] ) cylinder( h = 11, d = 3.6, \$fn = 200, center = true ); //square instert translate( [ -10, -49, -1.5 ] ) cube( [ 2.6, 6, 9 ], center = true); //third hole form the top translate( [ -12, -113, -1] ) rotate( [ 90, 0, 90 ] ) cylinder( h = 11, d = 3.6, \$fn = 200, center = true ); //square instert translate( [ -10, -113, -1.5 ] ) cube( [ 2.6, 6, 9 ], center = true); //fourth hole form the top translate( [ -12, -163, -1] ) rotate( [ 90, 0, 90 ] ) cylinder( h = 11, d = 3.6, \$fn = 200, center = true ); //square instert translate( [ -10, -163, -1.5 ] ) cube( [ 2.6, 6, 9 ], center = true); //holes on the right //first hole from the top translate( [ 282.6, 1, -1] ) rotate( [ 90, 0, 90 ] ) cylinder( h = 11, d = 3.6, \$fn = 200, center = true ); //square instert translate( [ 282.6, 1, -1.5 ] ) cube( [ 2.6, 6, 9 ], center = true); //second hole from the top translate( [ 282.6, -49, -1] ) rotate( [ 90, 0, 90 ] ) cylinder( h = 11, d = 3.6, \$fn = 200, center = true ); //square instert translate( [ 282.6, -49, -1.5 ] ) cube( [ 2.6, 6, 9 ], center = true); //third hole from the top translate( [ 282.6, -113, -1] ) rotate( [ 90, 0, 90 ] ) cylinder( h = 11, d = 3.6, \$fn = 200, center = true ); //square instert translate( [ 282.6, -113, -1.5 ] ) cube( [ 2.6, 6, 9 ], center = true); //fourth hole from the top translate( [ 282.6, -163, -1] ) rotate( [ 90, 0, 90 ] ) cylinder( h = 11, d = 3.6, \$fn = 200, center = true ); //square instert translate( [ 282.6, -163, -1.5 ] ) cube( [ 2.6, 6, 9 ], center = true); //shroud hole first from the top LEFT translate( [ -11, -10.5, 0] ) rotate( [ 0, 0, 0 ] ) cylinder( h = 13, d = 3.6, \$fn = 200, center = true ); //square insert translate( [ -11, -10.5, -3] ) cube( [ 6, 6, 7] , center = true ); //shroud hole second from the top LEFT translate( [ -11, -90.5, 0] ) rotate( [ 0, 0, 0 ] ) cylinder( h = 13, d = 3.6, \$fn = 200, center = true ); //square insert translate( [ -11, -90.5, -3] ) cube( [ 6, 6, 7] , center = true ); //shroud hole third from the top LEFT translate( [ -11, -175.5, 0] ) rotate( [ 0, 0, 0 ] ) cylinder( h = 13, d = 3.6, \$fn = 200, center = true ); //square insert translate( [ -11, -175.5, -3] ) cube( [ 6, 6, 7] , center = true ); //+1 hole just in case translate( [ -11, -198, 0] ) rotate( [ 0, 0, 0 ] ) cylinder( h = 13, d = 3.6, \$fn = 200, center = true ); //square insert translate( [ -11, -198, -3] ) cube( [ 6, 6, 7] , center = true ); //shroud hole first from the top RIGHT translate( [ 282, -10.5, 0] ) rotate( [ 0, 0, 0 ] ) cylinder( h = 13, d = 3.6, \$fn = 200, center = true ); //square insert translate( [ 282, -10.5, -3] ) cube( [ 6, 6, 7] , center = true ); //shroud hole second from the top RIGHT translate( [ 282, -90.5, 0] ) rotate( [ 0, 0, 0 ] ) cylinder( h = 13, d = 3.6, \$fn = 200, center = true ); //square insert translate( [ 282, -90.5, -3] ) cube( [ 6, 6, 7] , center = true ); //shroud hole third from the top RIGHT translate( [ 282, -175.5, 0] ) rotate( [ 0, 0, 0 ] ) cylinder( h = 13, d = 3.6, \$fn = 200, center = true ); //square insert translate( [ 282, -175.5, -3] ) cube( [ 6, 6, 7] , center = true ); //+1 hole just in case translate( [ 282, -198, 0] ) rotate( [ 0, 0, 0 ] ) cylinder( h = 13, d = 3.6, \$fn = 200, center = true ); //square insert translate( [ 282, -198, -3] ) cube( [ 6, 6, 7] , center = true ); //top hole translate( [ -11, 10, 0 ] ) rotate( [ 90, 0 , 0 ] ) cylinder( h = 10, d = 3, \$fn = 200, center = true ); translate( [ 282, 10, 0 ] ) rotate( [ 90, 0 , 0 ] ) cylinder( h = 10, d = 3, \$fn = 200, center = true ); rectangular_array1( column, row, d,-12.644 ) hull()                  //first row of cells LOFT like function { translate( [ 0, 0, 0 ] ) translate( [ 0, 0, 2 ] ) rotate( [ 0, 0, 90 ] ) cylinder(  h = 0.001, d = 7.9, center = true ); translate( [ 0, 0, 0 ] ) translate( [ 0, -a, -7 ] ) rotate( [ 0, 0, 90 ] ) cylinder(  h = 0.001, d = 7.9, center = true ); } ;           // semi colon for the end of rectangular_array1 statemant rectangular_array2( column -1 , row + 1, d, -12.644 ) hull()                  //second row of cells LOFT like function { translate( [ -d, 0, 2 ] ) translate( [ d + ( d / 2 ) , y, 0.001 ] ) rotate( [ 0, 0, 90 ] ) cylinder(  h = 0.001, d = 7.9, center = true ); //7.9 for ~6.9 from side to side cell translate( [ -d, y, 0 ] ) translate( [ d +( d / 2 ), -a, -7 ] ) rotate( [ 0, 0, 90 ] ) cylinder(  h = 0.001, d = 7.9, center = true );     } ;         // semi colon for the end of rectangular_array2 statemant } module rectangular_array1( rows, colum, distance1, distance2 )                   //pattern rown 1 {         for( k = [ 0: 1: rows - 1 ] )         {           for( j = [ 0: 1: colum - 1 ]) // start value,step value, end value                 {                  translate( [ distance1 * k, distance2 * j ] )                         children();                 }         }         }   module rectangular_array2( rows, colum, distance1, distance2 )                 //pattern row 2 {         for( k = [ 0: 1: rows - 1 ] )         {           for( j = [ 0: 1: colum - 1 ]) // start value,step value, end value                 {                  translate( [ distance1 * k, distance2 * j ] )                         children();                 }         }         module mirror_copy ( mirrorVector ) {        children();        mirror( mirrorVector ) children(); }         }
Open this post in threaded view
|

## Re: 3D printing project need help with a pattern

 The top-down view makes it difficult to work out the structure underneath the honeycomb. Do you have an isometric-ish view, diagonally from the side, that makes it easier to see? Here's my guess at a structure, based on images I've looked at online. This cuts a hexagonal cone out of the base plate: cw=10; // cell width cww=1; // cell wall width bt=2; // base thickness bbwt=1; // base bottom wall thickness hct=2; // honeycomb thickness hcw=120; // honeycomb width hch=80; // honeycomb height xw=0.4; // extrude width // top honeycomb translate([0,0,-xw]) linear_extrude(height=hct+xw) difference(){   square([hcw, hch], center=true);   for(x = [-(0.5*hcw/cw+1):(0.5*hcw/cw+1)]){       for(y = [-(0.5*hch/cw+1):(0.5*hch/cw+1)]){         translate([(y)%2*(cw/2) + x*cw,y*cw*cos(30)])           rotate(30) circle(d=cw/cos(30)-cww, \$fn=6);       }   } } // cutouts difference(){     translate([0,0,-bt/2]) cube([hcw,hch, bt], center=true); // base plate     for(x = [-(0.5*hcw/cw+1):(0.5*hcw/cw+1)]){         for(y = [-(0.5*hch/cw+1):(0.5*hch/cw+1)]){             translate([(y)%2*(cw/2) + x*cw,y*cw*cos(30)]) hull(){                 rotate(30) translate([0,0,-bt+bbwt])                     cylinder(h=bt-bbwt+xw/10, d1=0, d2=cw/cos(30)-cww/2-xw, \$fn=6);             }         }     } } Open this post in threaded view
|

## Re: 3D printing project need help with a pattern

 This post was updated on . Hello, David Thank you for the rapid response. It's almost what i need but this is not the exact shape of the bottom of the cell. I usually would do this with a chamfer in Fusion360 for example but the program crashes that's why i started using OpenSCAD. Here is a picture of a plastic bee hive frame. I need only the sloped sides of the bottom of the cell not the extruded cells in my project they are separate components. Just for the sake of optimization would you change anything about the previous code i have posted? Thanks in advance.