Knapp joint in OpenSCAD cut on a CNC using Carbide Create

WillAdams · October 15, 2023, 7:54pm

Ages ago, worked up an OpenSCAD file for laying out a Knapp joint:

WillAdams/Design_Into_3D/blob/master/box/knapp/knappjoints.scad

//!OpenSCAD

stockwidth = 89;
stockthickness = 19.5;
my_3DprevieworDXF = true;
$fa = 0.4;//0.2;
$fs = 0.4;//0.2;

nou = round(stockwidth / stockthickness - 0.5);
pindiameter = stockthickness / 4;
pinradius = pindiameter / 2;
covediameter = pindiameter * 3;
coveradius = covediameter / 2;
covespacing = (stockwidth - nou * covediameter) / nou;
csr = covespacing / 2;


if (my_3DprevieworDXF == true) {
  knappbox3d();
} else {

This file has been truncated. show original

So did a layout:

https://community.carbide3d.com/uploads/short-url/qfgiwnyRtby3rbYbzuD2Nw4CVP6.c2d

https://community.carbide3d.com/uploads/short-url/jffyFPNoMx7wKeTSVjhuQvUAAfQ.c2d

cut some parts:

prepped them:

and made a box: