/*
A copyright statement is attached to every file and product created for the
project.  It takes the form of the copyright statement for this 
document:

The project provides a modern way to design and knit garments
using domestic and semi-professional knitting machines.  This document
describes the LockController hardware.

Copyright (C) 2020 Owen Mace and Odile Lambert

This document is free information: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your
option) any later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with
this program.  If not, see <https://www.gnu.org/licenses/>.
*/
/*
This is the attachment module that slips into the yarn mast of
an E6000 knitting machine.
Other products, such as a yarn bucket holder will use this file,
  perhaps as an include.

Use: YarnMastAttachment();

All measurements are in mm
*/

Tolerance = 0.2;

//Attachment module
ModuleLength  = 15.2; //X direction
ModuleWidth   = 13.0; //Y direction
ModuleHeight  = 28.0; //Z direction

//YarnMastAttachment();

module YarnMastAttachment()
{
  CentreDia   = 6.7;
   //Slots in the side
  WidthAtSlot = 9.5;
  SlotX       = 3.6 + Tolerance * 2;
  SlotY       = ( ModuleWidth - WidthAtSlot) / 2;
  SlotZ       = 18;
  DistFromEnd = 7.7;

 difference()
  {
    cube([ ModuleLength, ModuleWidth, ModuleHeight]);
    //Remove centre slot
    translate([ 2.5 + CentreDia / 2, ModuleWidth / 2, -Tolerance]) 
      cylinder( h = ModuleHeight + Tolerance * 2, d = CentreDia);
    translate([ 2.5 + CentreDia / 2, ModuleWidth / 2 - CentreDia / 2, -Tolerance])
      cube([ ModuleLength, CentreDia, ModuleHeight + Tolerance * 2]);
    //Remove slots at the side which fit the mast
    translate([ ModuleLength - DistFromEnd - SlotX, -0.01, -Tolerance])
      cube([ SlotX, SlotY, SlotZ]);
    translate([ ModuleLength - DistFromEnd - SlotX,
                ModuleWidth - SlotY + 0.01, -Tolerance])
      cube([ SlotX, SlotY, SlotZ]);
    //Bevel the ends
    translate([ ModuleLength - 1, -1.4,  - Tolerance]) rotate([ 0, 0, 45])
      cube([ SlotX + 1, SlotY, ModuleHeight + Tolerance * 2]);
    translate([ ModuleLength - 2, ModuleWidth, - Tolerance]) rotate([ 0, 0, -45])
      cube([ SlotX + 1, SlotY, ModuleHeight + Tolerance * 2]);
  }
}