- Posts
- 108
- Likes
- 781
watchmann44232
路Hello All,
I purchased from EBay an aftermarket leather band for a Geneve Dynamic. Alas, it was too thick and I didn't have a courage (or wisdom?) to try and force the ring to close so that it would have been anywhere near flush with the caseback. As a solution I 3d printed a small tool that allows compressing the leather band as to make it fit better and allow the ring to be tightened without excessive force. Please see below OpenSCAD source code if you want to play with this.
This is how it looked after it first arrived (I could have tightened it a bit more, but I was afraid of the tool slipping and/or damaging the threads):
Leather band after ~6 days in a press; I tightened up the clamp every couple of days.
And then in place / ring tightened. It's almost flush now with the caseback.
This is how the parts look with and without the band in them (note that in the photo with the clamp the top is my first attempt and is now replaced with ring only; its stronger that way). Metal brackets are from IKEA shelf and were used to apply pressure from the clamp more evenly.
Don't know if it helped or not, but before putting the band to the press, I applied a bit of water to make the center a bit moist (my thinking was that maybe it softens the band a bit).
OpenSCAD Source code below. When slicing the STL file, it's a good idea to make the parts pretty solid. My first base caved in when I tightened the clamp.
edit: spelling, src
I purchased from EBay an aftermarket leather band for a Geneve Dynamic. Alas, it was too thick and I didn't have a courage (or wisdom?) to try and force the ring to close so that it would have been anywhere near flush with the caseback. As a solution I 3d printed a small tool that allows compressing the leather band as to make it fit better and allow the ring to be tightened without excessive force. Please see below OpenSCAD source code if you want to play with this.
This is how it looked after it first arrived (I could have tightened it a bit more, but I was afraid of the tool slipping and/or damaging the threads):
Leather band after ~6 days in a press; I tightened up the clamp every couple of days.
And then in place / ring tightened. It's almost flush now with the caseback.
This is how the parts look with and without the band in them (note that in the photo with the clamp the top is my first attempt and is now replaced with ring only; its stronger that way). Metal brackets are from IKEA shelf and were used to apply pressure from the clamp more evenly.
Don't know if it helped or not, but before putting the band to the press, I applied a bit of water to make the center a bit moist (my thinking was that maybe it softens the band a bit).
OpenSCAD Source code below. When slicing the STL file, it's a good idea to make the parts pretty solid. My first base caved in when I tightened the clamp.
Code:
$fn = 180;
eps = 0.05;
// Omega Dynamic TOOL44232
// Shared dims
boss_d = 30;
cavity_width = 3.1;
cavity_depth = 4;
cavity_outer_d = boss_d + 2 * cavity_width;
// Bottom piece
bottom_base_d = 50;
bottom_base_h = 15;
band_slot_w = 27.5;
// Top piece
press_depth = 6;
// Fit clearance for the press lip inside the cavity
fit_clearance = 0.25;
// ...
press_inner_d = boss_d + 2 * fit_clearance;
press_outer_d = cavity_outer_d - 2 * fit_clearance;
// Bottom piece
module bottom_piece() {
floor_h = bottom_base_h - cavity_depth;
union() {
cylinder(h = floor_h, d = bottom_base_d);
cylinder(h = bottom_base_h, d = boss_d);
translate([0, 0, floor_h])
difference() {
difference() {
cylinder(h = cavity_depth, d = bottom_base_d);
cylinder(h = cavity_depth + eps, d = cavity_outer_d);
}
translate([-bottom_base_d, -band_slot_w/2, -eps])
cube([2 * bottom_base_d, band_slot_w, cavity_depth + 2*eps]);
}
}
}
// Top piece -- ring only
module top_piece() {
difference() {
cylinder(h = press_depth, d = press_outer_d);
cylinder(h = press_depth + eps, d = press_inner_d);
}
}
// Uncomment to preview/print
translate([0,0,30]) rotate([0,180,0]) bottom_piece();
//top_piece();edit: spelling, src
Edited:
