Re: [Emc-users] ender 3 and low quality sprockets

2020-11-11 Thread Chris Albertson
The information is gone. There is no way to automatically reconstruct a curve from a sequence of straight lines. A human can do this because he can see what was intended. A better approach is to create a slicer that can work with .STEP files directly. The trouble with that is the mathematics

Re: [Emc-users] ender 3 and low quality sprockets

2020-11-11 Thread Gregg Eshelman via Emc-users
Since it looks like there's little or no progress on an update to the STL format, there is work going on for 3D printer G-code post processing to refine and smooth curves or even convert curves defined by a series of straights to real arcs for printers that have hardware and firmware capable of

Re: [Emc-users] ender 3 and low quality sprockets

2020-11-11 Thread Gene Heskett
On Wednesday 11 November 2020 14:50:29 Gene Heskett wrote: > On Wednesday 11 November 2020 13:10:38 grumpy--- via Emc-users wrote: > > On Wed, 11 Nov 2020, Gene Heskett wrote: > > > Greetings 3d printer X-spurts; > > > > > > I just downloaded the .stl kit for a nema 17 powered, gt2 belt > > >

Re: [Emc-users] ender 3 and low quality sprockets

2020-11-11 Thread Gene Heskett
On Wednesday 11 November 2020 13:10:38 grumpy--- via Emc-users wrote: > On Wed, 11 Nov 2020, Gene Heskett wrote: > > Greetings 3d printer X-spurts; > > > > I just downloaded the .stl kit for a nema 17 powered, gt2 belt > > driven reduction gear. > > if i may ask, what did you download > >search

Re: [Emc-users] ender 3 and low quality sprockets

2020-11-11 Thread grumpy--- via Emc-users
On Wed, 11 Nov 2020, Gene Heskett wrote: Greetings 3d printer X-spurts; I just downloaded the .stl kit for a nema 17 powered, gt2 belt driven reduction gear. if i may ask, what did you download ___ Emc-users mailing list

Re: [Emc-users] ender 3 and low quality sprockets

2020-11-11 Thread Gene Heskett
On Wednesday 11 November 2020 11:43:37 Chris Albertson wrote: > Remember the workflow. You start with a 3D model where the resolution > is literally "perfect" as the curves are defined by mathematical > functions. Then you convert the 3D model to an STL and an STL can > contain only straight

Re: [Emc-users] ender 3 and low quality sprockets

2020-11-11 Thread Chris Albertson
Remember the workflow. You start with a 3D model where the resolution is literally "perfect" as the curves are defined by mathematical functions. Then you convert the 3D model to an STL and an STL can contain only straight lines. No circles, no curves. When you make the STL you get to specify

Re: [Emc-users] ender 3 and low quality sprockets

2020-11-11 Thread Gene Heskett
On Wednesday 11 November 2020 02:44:09 marcus.bow...@visible.eclipse.co.uk wrote: > On 2020-11-11 05:12, Gene Heskett wrote: > > Greetings 3d printer X-spurts; > > > > So I've come to the conclusion that quite a bit of what you can > > download > > as .stl's, are intended to be very low

Re: [Emc-users] ender 3 and low quality sprockets

2020-11-11 Thread andy pugh
On Wed, 11 Nov 2020 at 05:15, Gene Heskett wrote: > So I've come to the conclusion that quite a bit of what you can download > as .stl's, are intended to be very low resolution so as not to compete > with the same you-toobers commercial offerings. You are free to conclude what you want, of