only round the sides, not the top/bottom, of the frame

trying to simplify the print again a bit, I think the roundedness is one of the causes of prints lifting since the top is now "sharp" (not that sharp in my printing practice, but whatever), I added a bevel to the front in an attempt to make it a bit more comfortable Signed-off-by: Brian S. Stephan <bss@incorporeal.org>
chamfer the frame bottom
2024-02-11 19:27:35 -06:00 · 2024-02-11 19:27:32 -06:00 · 2024-02-11 19:27:27 -06:00 · 2024-02-11 19:27:23 -06:00 · 2024-02-11 19:27:17 -06:00
2 changed files with 31 additions and 5 deletions
--- a/src/bottom-panel-inset.scad
+++ b/src/bottom-panel-inset.scad
@ -6,8 +6,8 @@
 include <parameters.scad>
 include <components.scad>

-module bottom_panel() {
-	mirror([0, 0, 1]) panel();
+module inset_bottom_panel() {
+	bottom_panel();
 }

-bottom_panel();
+inset_bottom_panel();
--- a/src/components.scad
+++ b/src/components.scad
@ -166,6 +166,16 @@ module base_panel() {
 	cube([panel_x, panel_y, panel_z], center=true);
 }

+module base_bottom_panel() {
+	difference() {
+		base_panel();
+		translate([0, panel_y/2, panel_z]) rotate([45, 0, 0]) cube([panel_x+0.01, 10, 10], center=true);
+		translate([0, -panel_y/2, panel_z]) rotate([315, 0, 0]) cube([panel_x+0.01, 10, 10], center=true);
+		translate([panel_x/2, 0, panel_z]) rotate([0, 45, 0]) cube([10, panel_y+0.01, 10], center=true);
+		translate([-panel_x/2, 0, panel_z]) rotate([0, 315, 0]) cube([10, panel_y+0.01, 10], center=true);
+	}
+}
+
 module panel() {
 	difference() {
 		base_panel();
@ -173,6 +183,13 @@ module panel() {
 	}
 }

+module bottom_panel() {
+	difference() {
+		base_bottom_panel();
+		mirror([0, 0, 1]) panel_holes();
+	}
+}
+
 module overhang_plate() {
 	roundedcube([overhang_panel_x, overhang_panel_y, panel_z], center=true, radius=1);
 }
@ -204,7 +221,13 @@ module panel_with_raised_overhang() {

 module frame_box() {
 	difference() {
-		roundedcube([frame_x, frame_y, frame_z], center=true, radius=3);
+		points = [ [(frame_x/2)-3, (frame_y/2)-3, 0], [-(frame_x/2)+3, (frame_y/2)-3, 0],
+			[(frame_x/2)-3, -(frame_y/2)+3, 0], [-(frame_x/2)+3, -(frame_y/2)+3, 0] ];
+		hull() {
+			for (p = points) {
+				translate(p) cylinder(r=3, h=frame_z, center=true);
+			}
+		}
 		// cut out the middle to make it a box
 		cube([panel_x-(panel_support_width*2), panel_y-(panel_support_width*2), frame_z+5], center=true);
 	}
@ -250,11 +273,14 @@ module frame() {
 	difference() {
 		base_frame();
 		translate([0, 0, frame_z/2]) scale([1, 1, 2]) base_panel();
-		translate([0, 0, -frame_z/2]) scale([1, 1, 2]) base_panel();
+		translate([0, 0, -frame_z/2]) scale([1, 1, 2]) base_bottom_panel();
 		translate([panel_to_frame_point_x, panel_to_frame_point_y, 0]) frame_hex_bolt_hole();
 		translate([-panel_to_frame_point_x, panel_to_frame_point_y, 0]) frame_hex_bolt_hole();
 		translate([panel_to_frame_point_x, -panel_to_frame_point_y, 0]) frame_hex_bolt_hole();
 		translate([-panel_to_frame_point_x, -panel_to_frame_point_y, 0]) frame_hex_bolt_hole();
+
+		// comfort bevel
+		translate([0, -frame_y/2, frame_z/2]) rotate([45, 0, 0]) cube([frame_x+0.01, 4, 4], center=true);
 	}
 }
Author	SHA1	Message	Date
Brian S. Stephan	b564847eff	only round the sides, not the top/bottom, of the frame trying to simplify the print again a bit, I think the roundedness is one of the causes of prints lifting since the top is now "sharp" (not that sharp in my printing practice, but whatever), I added a bevel to the front in an attempt to make it a bit more comfortable Signed-off-by: Brian S. Stephan <bss@incorporeal.org>	2024-02-11 19:27:35 -06:00
Brian S. Stephan	fd2f1da28c	chamfer the frame bottom chamfering a new bottom panel also chamfers the bottom of the frame, since the panel subtracts from the cube, the goal being to need fewer supports on the frame and simplify the overall post-print Signed-off-by: Brian S. Stephan <bss@incorporeal.org>	2024-02-11 19:27:32 -06:00
Brian S. Stephan	773433cd10	add a chamfer to the frame mount columns should add a bit of structural strength without compromising much Signed-off-by: Brian S. Stephan <bss@incorporeal.org>	2024-02-11 19:27:27 -06:00
Brian S. Stephan	bad3c7628f	grow the frame, remove the bottom panel basin the bottom panel had a basin or tray to make room for taller levers, namely the Seimitsu LSX-NOBI that I really like. per its specs, the lever needs 43.70mm internally, and the old values were too tight (55mm - 19mm from panels - 2mm from lever plate = 43) so the bottom panel was arbitrarily given a sunken portion (somewhat arbitrarily 2.5mm) to compensate at the time, because I already had frames printed. adding 2mm to the frame Z covers the difference (57mm - 10mm - 2mm = 45mm) and thus we don't need the bottom panel hack anymore. I also suspect the bottom panel basin was slightly affecting it structurally, so this may help that. Signed-off-by: Brian S. Stephan <bss@incorporeal.org>	2024-02-11 19:27:23 -06:00
Brian S. Stephan	6a1e1cc1f3	better component/parameter names to match panel naming sed -i 's/top_plate/panel/g' .scad sed -i 's/plate_to_frame/panel_to_frame/g' .scad Signed-off-by: Brian S. Stephan <bss@incorporeal.org>	2024-02-11 19:27:17 -06:00