Proposal: Add a split command
I have created lots of real-world items with the 3d printer, using OpenSCAD.
And I just love it.
A lot of the stuff I build, winds up having to be printed with "rafts" or
"supports". It is ugly, and very time consuming to break off all that stuff
to get the final product.
Proposal: If after building something fairly complicated (that I know will
require rafts or supports), I could SPLIT it in half, I would in a lot of
cases eliminate the need for rafts or supports at all. It could be split
horizontally along the x-y plane, at some Z. Like split($children, z=4). Or
split vertically along x-z plane, at some Y. Like split($children, y=6). Or
something. I don't know if I am making any sense here. It has been a long
day.
What I have been doing is building something, and then having to go back
and try to "split" it up myself, painstakingly!
Am I wrong to want this? Or is there something that I have not seen, that
is already there in openSCAD?
Thanks,
Jerry
--
Extra Ham Operator: K7AZJ
Registered Linux User: 275424
Raspberry Pi and Arduino developer
The most exciting phrase to hear in science - the one that heralds new
discoveries - is not "Eureka!" but "That's funny...".- Isaac. Asimov
I
*f you give someone a program, you will frustrate them for a day; if you
teach them how to program, you will frustrate them for a lifetime. *-
Anonymous
If writing good code requires very little comments, then writing really
excellent code requires no comments at all!- Ken Thompson
I do this already. Just wrap an interstection() around a union() of
everything in your model, and use a large cube to chop out the part you
need. allows you to cut-up or split a model using any geometry mask you
wish.
Example
// example split on yz plane, first part
intersection(){
union(){
...... my model here .......
}
translate([-50,0,0])
cube([100,200,200], center=yes);
}
// second part
intersection(){
union(){
...... my model here .......
}
translate([50,0,0])
cube([100,200,200], center=yes);
}
On Sat, Oct 17, 2015, 09:20 Jerry Davis jdawgaz@gmail.com wrote:
I have created lots of real-world items with the 3d printer, using
OpenSCAD.
And I just love it.
A lot of the stuff I build, winds up having to be printed with "rafts" or
"supports". It is ugly, and very time consuming to break off all that stuff
to get the final product.
Proposal: If after building something fairly complicated (that I know will
require rafts or supports), I could SPLIT it in half, I would in a lot of
cases eliminate the need for rafts or supports at all. It could be split
horizontally along the x-y plane, at some Z. Like split($children, z=4). Or
split vertically along x-z plane, at some Y. Like split($children, y=6). Or
something. I don't know if I am making any sense here. It has been a long
day.
What I have been doing is building something, and then having to go back
and try to "split" it up myself, painstakingly!
Am I wrong to want this? Or is there something that I have not seen, that
is already there in openSCAD?
Thanks,
Jerry
--
Extra Ham Operator: K7AZJ
Registered Linux User: 275424
Raspberry Pi and Arduino developer
The most exciting phrase to hear in science - the one that heralds new
discoveries - is not "Eureka!" but "That's funny...".- Isaac. Asimov
I
*f you give someone a program, you will frustrate them for a day; if you
teach them how to program, you will frustrate them for a lifetime. *-
Anonymous
If writing good code requires very little comments, then writing really
excellent code requires no comments at all!- Ken Thompson
OpenSCAD mailing list
Discuss@lists.openscad.org
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org
oh really? its this easy? I will try this ASAP.
thanks!!!!!!
Jerry
On Fri, Oct 16, 2015 at 6:58 PM, Tim Hawkins tim.thawkins@gmail.com wrote:
// example split on yz plane, first part
intersection(){
union(){
...... my model here .......
}
translate([-50,0,0])
cube([100,200,200], center=yes);
}
// second part
intersection(){
union(){
...... my model here .......
}
translate([50,0,0])
cube([100,200,200], center=yes);
}
--
Extra Ham Operator: K7AZJ
Registered Linux User: 275424
Raspberry Pi and Arduino developer
The most exciting phrase to hear in science - the one that heralds new
discoveries - is not "Eureka!" but "That's funny...".- Isaac. Asimov
I
*f you give someone a program, you will frustrate them for a day; if you
teach them how to program, you will frustrate them for a lifetime. *-
Anonymous
If writing good code requires very little comments, then writing really
excellent code requires no comments at all!- Ken Thompson
I tried it! beautiful solution! now I have found a use for the
intersection().
$fn = 60;
module myobj() {
difference() {
cylinder(h=10, r=10, center=true);
rotate([0,90,0]) cylinder(h=25, r=5, center=true);
}
}
// put an explanation point just before the keyword "intersection" to
// display either the top half or the bottom half.
// top half
intersection() {
myobj();
translate([0, 0, 25]) cube([200,50,50], center=true);
}
// bottom half
intersection() {
myobj();
translate([0, 0, -25]) cube([200,50,50], center=true);
}
--
Extra Ham Operator: K7AZJ
Registered Linux User: 275424
Raspberry Pi and Arduino developer
The most exciting phrase to hear in science - the one that heralds new
discoveries - is not "Eureka!" but "That's funny...".- Isaac. Asimov
I
*f you give someone a program, you will frustrate them for a day; if you
teach them how to program, you will frustrate them for a lifetime. *-
Anonymous
If writing good code requires very little comments, then writing really
excellent code requires no comments at all!- Ken Thompson
On Sat, Oct 17, 2015 at 3:51 AM, Jerry Davis jdawgaz@gmail.com wrote:
oh really? its this easy? I will try this ASAP.
thanks!!!!!!
Jerry
On Fri, Oct 16, 2015 at 6:58 PM, Tim Hawkins tim.thawkins@gmail.com
wrote:
// example split on yz plane, first part
intersection(){
union(){
...... my model here .......
}
translate([-50,0,0])
cube([100,200,200], center=yes);
}
// second part
intersection(){
union(){
...... my model here .......
}
translate([50,0,0])
cube([100,200,200], center=yes);
}
--
Extra Ham Operator: K7AZJ
Registered Linux User: 275424
Raspberry Pi and Arduino developer
The most exciting phrase to hear in science - the one that heralds new
discoveries - is not "Eureka!" but "That's funny...".- Isaac. Asimov
I
*f you give someone a program, you will frustrate them for a day; if you
teach them how to program, you will frustrate them for a lifetime. *-
Anonymous
If writing good code requires very little comments, then writing really
excellent code requires no comments at all!- Ken Thompson
On 10/17/2015 07:13 AM, Jerry Davis wrote:
a use for the intersection()
Now add holes for alignment pins, so you can glue the parts back
together with perfect registration:
http://softsolder.com/2013/11/12/improved-alignment-pin-hole-for-split-3d-prints/
Given a split parallel to the 3D printed layers and a deft glue job, you
probably won't even notice the joint...
--
Ed
softsolder.com