buggy
Greetings;
I have downloaded the January AppImage 3 times now, but all three copies
have had the same buglet, and I cannot proceed.
I've attached a screenshot. That is the whole program. Takes about 14
minutes to render if the for loop is uncommented. The hour+ comment was
a previous incarnation and is now wrong.
line 24 is supposed to be generating a cylinder, not the smaller
rectangle in the center of the right hand image. How can I restore it
to draw an end on cylinder so it looks like [( )] in the right view.
Cheers, Gene Heskett
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/gene
$fn=360 is the problem, try 60, then increase it some for your final render prior to export.
-----Original Message-----
From: Gene Heskett [mailto:gheskett@shentel.net]
Sent: Thu, 1 Apr 2021 16:54
To: discuss@lists.openscad.org
Subject: [OpenSCAD] buggy
Greetings;
I have downloaded the January AppImage 3 times now, but all three copies
have had the same buglet, and I cannot proceed.
I've attached a screenshot. That is the whole program. Takes about 14
minutes to render if the for loop is uncommented. The hour+ comment was
a previous incarnation and is now wrong.
line 24 is supposed to be generating a cylinder, not the smaller
rectangle in the center of the right hand image. How can I restore it
to draw an end on cylinder so it looks like [( )] in the right view.
Cheers, Gene Heskett
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/gene
--
This email has been checked for viruses by AVG.
https://www.avg.com
line 24 is supposed to be generating a cylinder,
Please paste the code.
-----Original Message-----
From: Gene Heskett [mailto:gheskett@shentel.net]
Sent: Thu, 1 Apr 2021 16:54
To: discuss@lists.openscad.org
Subject: [OpenSCAD] buggy
Greetings;
I have downloaded the January AppImage 3 times now, but all three copies
have had the same buglet, and I cannot proceed.
I've attached a screenshot. That is the whole program. Takes about 14
minutes to render if the for loop is uncommented. The hour+ comment was
a previous incarnation and is now wrong.
line 24 is supposed to be generating a cylinder, not the smaller
rectangle in the center of the right hand image. How can I restore it
to draw an end on cylinder so it looks like [( )] in the right view.
Cheers, Gene Heskett
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/gene
--
This email has been checked for viruses by AVG.
https://www.avg.com
On Thursday 01 April 2021 02:02:27 MichaelAtOz wrote:
$fn=360 is the problem, try 60, then increase it some for your final
render prior to export.
No effect, even if removed. Given the relative lack of precision in a 3d
printer, even 16 would be a servicable profile.
Thank you Michael.
Greetings;
I have downloaded the January AppImage 3 times now, but all three
copies have had the same buglet, and I cannot proceed.
I've attached a screenshot. That is the whole program. Takes about
14 minutes to render if the for loop is uncommented. The hour+
comment was a previous incarnation and is now wrong.
line 24 is supposed to be generating a cylinder, not the smaller
rectangle in the center of the right hand image. How can I restore
it to draw an end on cylinder so it looks like [( )] in the right
view.
Cheers, Gene Heskett
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/gene
On Thursday 01 April 2021 02:06:09 MichaelAtOz wrote:
line 24 is supposed to be generating a cylinder,
Please paste the code.
You are looking at all of it in the screenshot. I'll insert the .scad
file
// my feeble attempt at generating a ball bearing.
// my alu block is 140.9mm square
dmtr=119.50; // in mm's of ID,squeeze it a hair.
height=9.25; // in mm's
// everything below is generated center=true
// which means we're dealing in radius
ctr_ht=(height * .50000); // mults are faster
echo(8, dmtr, ctr_ht);
halfd=(dmtr *.50000); // rad of inner diameter
echo(10, halfd);
innr=(halfd+ctr_ht); // sub to move innr ID to dmtr
echo(12, innr);
outd=(dmtr+height); // figure outter face dia
echo(14, outd);
bb=4.40; // .01mm less than a crosman bb to preload it
$fn=360;
echo(16, bb, $fn);
ang=0.00000; // a cache bug, needs zeroed for another render
//for(ang=[1: 1: 360]) {
// rotate(ang)
translate([innr,0,0])
difference(){
cube([height,2,height], center=true);
cylinder(h=2,d=bb,center=true, $fn=360);
// generates a cylinder to
// punch bearing hole in square
scale([.25,1,1.1]) cube(height,center=true); // makes a
// rectangle to split the rings to inner and outer
// }// render sits at 999/1000 for over an hour
};
echo(31, $fn);// checking to see if $fn survived, it does.
-----Original Message-----
From: Gene Heskett [mailto:gheskett@shentel.net]
Sent: Thu, 1 Apr 2021 16:54
To: discuss@lists.openscad.org
Subject: [OpenSCAD] buggy
Greetings;
I have downloaded the January AppImage 3 times now, but all three
copies have had the same buglet, and I cannot proceed.
I've attached a screenshot. That is the whole program. Takes about
14 minutes to render if the for loop is uncommented. The hour+
comment was a previous incarnation and is now wrong.
line 24 is supposed to be generating a cylinder, not the smaller
rectangle in the center of the right hand image. How can I restore
it to draw an end on cylinder so it looks like [( )] in the right
view.
Cheers, Gene Heskett
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law
respectable. - Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/gene
Cheers, Gene Heskett
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/gene
On Thursday 01 April 2021 02:27:00 Gene Heskett wrote:
I am DITW, and its 2:30 AM my time, bedtime I believe.
Thanks all.
Cheers, Gene Heskett
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/gene
You are looking at all of it in the screenshot.
Difficult to file/open the screenshot ;)
You want to rotate the cylinder:
rotate([90,0,0])
cylinder(h=2,d=bb,center=true, $fn=360);
To get rid of that z-fighting make the cylinder stick out of the cubes a bit
rotate([90,0,0])
cylinder(h=2.1,d=bb,center=true, $fn=60);
Note $fn=60, renders fast.
-----Original Message-----
From: Gene Heskett [mailto:gheskett@shentel.net]
Sent: Thu, 1 Apr 2021 17:27
Subject: [OpenSCAD] Re: buggy
On Thursday 01 April 2021 02:06:09 MichaelAtOz wrote:
line 24 is supposed to be generating a cylinder,
Please paste the code.
You are looking at all of it in the screenshot. I'll insert the .scad
file
// my feeble attempt at generating a ball bearing.
// my alu block is 140.9mm square
dmtr=119.50; // in mm's of ID,squeeze it a hair.
height=9.25; // in mm's
// everything below is generated center=true
// which means we're dealing in radius
ctr_ht=(height * .50000); // mults are faster
echo(8, dmtr, ctr_ht);
halfd=(dmtr *.50000); // rad of inner diameter
echo(10, halfd);
innr=(halfd+ctr_ht); // sub to move innr ID to dmtr
echo(12, innr);
outd=(dmtr+height); // figure outter face dia
echo(14, outd);
bb=4.40; // .01mm less than a crosman bb to preload it
$fn=360;
echo(16, bb, $fn);
ang=0.00000; // a cache bug, needs zeroed for another render
//for(ang=[1: 1: 360]) {
// rotate(ang)
translate([innr,0,0])
difference(){
cube([height,2,height], center=true);
cylinder(h=2,d=bb,center=true, $fn=360);
// generates a cylinder to
// punch bearing hole in square
scale([.25,1,1.1]) cube(height,center=true); // makes a
// rectangle to split the rings to inner and outer
// }// render sits at 999/1000 for over an hour
};
echo(31, $fn);// checking to see if $fn survived, it does.
-----Original Message-----
From: Gene Heskett [mailto:gheskett@shentel.net]
Sent: Thu, 1 Apr 2021 16:54
Subject: [OpenSCAD] buggy
Greetings;
I have downloaded the January AppImage 3 times now, but all three
copies have had the same buglet, and I cannot proceed.
I've attached a screenshot. That is the whole program. Takes about
14 minutes to render if the for loop is uncommented. The hour+
comment was a previous incarnation and is now wrong.
line 24 is supposed to be generating a cylinder, not the smaller
rectangle in the center of the right hand image. How can I restore
it to draw an end on cylinder so it looks like [( )] in the right
view.
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law
respectable. - Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/gene
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/gene
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
--
This email has been checked for viruses by AVG.
https://www.avg.com
BTW, if you have trouble with a difference()'d item use #
e.g. your cylinder() without the rotate()
#cylinder(h=2.1,d=bb,center=true, $fn=60);
-----Original Message-----
From: Gene Heskett [mailto:gheskett@shentel.net]
Sent: Thu, 1 Apr 2021 17:31
Subject: [OpenSCAD] Re: buggy
On Thursday 01 April 2021 02:27:00 Gene Heskett wrote:
I am DITW, and its 2:30 AM my time, bedtime I believe.
Thanks all.
Cheers, Gene Heskett
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/gene
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
--
This email has been checked for viruses by AVG.
https://www.avg.com
Add a rotate to the cylinder kit to get it facing the right way
rotate([90,0,0]) cylinder(h=2,d=bb,center=true, $fn=60);
A better way would be to generate the same object as a 2D flat cross section (use square and circle then use rotate_extrude to generate the bearing holder
Cheers Bob
Gene,
the whole approach this ballbearing shells are modelled is wrong, or at
least a bit awkward. It leads to an (implicid) union of a thousand little
objects into a ring making OpenSCAD very slow. There are much better ways to
model such a thing.
A fast rendering version would be the following core code instead of the for
loop which btw. runs fast even with $fn=360.
rotate_extrude()
translate([innr,0,0])
difference()
{
square(height, center = true);
circle(d=bb);
square([.25height, 1.1height], center = true);
}
--
Sent from: http://forum.openscad.org/