Re: [luv-talk] Correct place to list free hardware
Jesse Stevens via luv-main wrote:
On 23 Oct 2016 7:02 a.m., "David Turk via luv-main" <luv-main@luv.asn.au <mailto:luv-main@luv.asn.au>> wrote:
Before I reply fully, what general location are you?
State, Suburb like.
Personally I'm out of Melbourne near Ballarat, but the hardware in question is in the CBD in Melbourne.
I'll post here with specifics when I get access to it all again (next few weeks or so).
I should probably also ask in this thread if other open tech is suitable to post here (we have 4 or so 3d printers based on the reprap printer firmware that we're looking to sell cheaply to homes where they'll be used for more than printing Yoda figurines).
Just as a matter of interest is there any standardised way of describing the "print resolution" of 3D printers; I notice there seems to be considerable variation in the 'roughness' of the finished printed artefacts; between top-end and economy 3D printer versions ? regards Rohan McLeod
pretty much the same as for regular printers.... XY resolution and Z resolution are typical. However, having said that, your results may vary... the resolution of the stepper motors (or laser) may well exceed the resolution of what can be accurately laid down, and certainly the minimum thickness of a single line of material may be considerably larger than that of the minimum resolution achievable kn a given surface. that is all before you start talking about the actual achievable quality of different configurations and technologies. laser stereolithography should be higher resolution than filament for example. I've only seen "production like" finishes achieved on top end industrial machines. that requires resolutions around 30 microns and consequently slow build times.TANSTAAFL On Sun, Oct 23, 2016 at 3:48 PM, Rohan McLeod via luv-talk < luv-talk@luv.asn.au> wrote:
Jesse Stevens via luv-main wrote:
On 23 Oct 2016 7:02 a.m., "David Turk via luv-main" <luv-main@luv.asn.au <mailto:luv-main@luv.asn.au>> wrote:
Before I reply fully, what general location are you?
State, Suburb like.
Personally I'm out of Melbourne near Ballarat, but the hardware in question is in the CBD in Melbourne.
I'll post here with specifics when I get access to it all again (next few weeks or so).
I should probably also ask in this thread if other open tech is suitable to post here (we have 4 or so 3d printers based on the reprap printer firmware that we're looking to sell cheaply to homes where they'll be used for more than printing Yoda figurines).
Just as a matter of interest is there any standardised way of describing the "print resolution" of 3D printers; I notice there seems to be considerable variation in the 'roughness' of the finished printed artefacts; between top-end and economy 3D printer versions ?
regards Rohan McLeod
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-- Dr Paul van den Bergen
Paul van den Bergen wrote:
pretty much the same as for regular printers.... XY resolution and Z resolution are typical. However, having said that, your results may vary... the resolution of the stepper motors (or laser) may well exceed the resolution of what can be accurately laid down, and certainly the minimum thickness of a single line of material may be considerably larger than that of the minimum resolution achievable kn a given surface.
Yes from : https://all3dp.com/3d-printer-resolution/ It seems consumer 3D printers don't do much better than 0.3mm; but frankly even that seems better than the little 3Dprinted figurines I have seen; which off the top of my head seemed more like +/- 1.00mm ! Are the errors in 'dot size ' ( blob size ?) cumulative ?
From : http://www.ilios3d.com/en/product-documentation/ilios-documentation-3dprint-... it seems there should be a "blobs per cubic centimeter " (bpcc ?) measure ; analogous to dpi in a traditional printer ?
that is all before you start talking about the actual achievable quality of different configurations and technologies. laser stereolithography should be higher resolution than filament for example.
I've only seen "production like" finishes achieved on top end industrial machines. that requires resolutions around 30 microns and consequently slow build times.TANSTAAFL
Well putting aside the contentious question of "There ain't no such thing as a free lunch" :-) ; we can probably agree there is a trade-off bteween build times and resolution ! regards Rohan McLeod
Hi, On 23 Oct. 2016, at 5:28 pm, Rohan McLeod via luv-talk <luv-talk@luv.asn.au> wrote:
Paul van den Bergen wrote:
pretty much the same as for regular printers.... XY resolution and Z resolution are typical. However, having said that, your results may vary... the resolution of the stepper motors (or laser) may well exceed the resolution of what can be accurately laid down, and certainly the minimum thickness of a single line of material may be considerably larger than that of the minimum resolution achievable kn a given surface.
Yes from : https://all3dp.com/3d-printer-resolution/ It seems consumer 3D printers don't do much better than 0.3mm; but frankly even that seems better than the little 3Dprinted figurines I have seen; which off the top of my head seemed more like +/- 1.00mm ! Are the errors in 'dot size ' ( blob size ?) cumulative ? From : http://www.ilios3d.com/en/product-documentation/ilios-documentation-3dprint-... it seems there should be a "blobs per cubic centimeter " (bpcc ?) measure ; analogous to dpi in a traditional printer ?
I think this is rubbish! I am a RepRap Wallace (very modified) and I am able to quite easily print to 100 microns (0.1mm). This main difference I find between RepRap printers and commercial ones like the Ultimaker is that RepRap require a lot more nursing and TLC compared to the high end printers and right now once of the best printers you can get is the Prusa i3 MK2 which is a RepRap printer.
that is all before you start talking about the actual achievable quality of different configurations and technologies. laser stereolithography should be higher resolution than filament for example.
I've only seen "production like" finishes achieved on top end industrial machines. that requires resolutions around 30 microns and consequently slow build times.TANSTAAFL
Well putting aside the contentious question of "There ain't no such thing as a free lunch" :-) ; we can probably agree there is a trade-off bteween build times and resolution !
Correct, if you go from a 200 to 100 micron layer it is going to basically double your print time. Gordon.
Gordon Heydon wrote:
Hi,
On 23 Oct. 2016, at 5:28 pm, Rohan McLeod via luv-talk <luv-talk@luv.asn.au> wrote:
Paul van den Bergen wrote:
pretty much the same as for regular printers.... XY resolution and Z resolution are typical. However, having said that, your results may vary... the resolution of the stepper motors (or laser) may well exceed the resolution of what can be accurately laid down, and certainly the minimum thickness of a single line of material may be considerably larger than that of the minimum resolution achievable kn a given surface. Yes from : https://all3dp.com/3d-printer-resolution/ It seems consumer 3D printers don't do much better than 0.3mm; but frankly even that seems better than the little 3Dprinted figurines I have seen; which off the top of my head seemed more like +/- 1.00mm ! Are the errors in 'dot size ' ( blob size ?) cumulative ? From : http://www.ilios3d.com/en/product-documentation/ilios-documentation-3dprint-... it seems there should be a "blobs per cubic centimeter " (bpcc ?) measure ; analogous to dpi in a traditional printer ? I think this is rubbish! I am a RepRap Wallace (very modified) and I am able to quite easily print to 100 microns (0.1mm). This main difference I find between RepRap printers and commercial ones like the Ultimaker is that RepRap require a lot more nursing and TLC compared to the high end printers and right now once of the best printers you can get is the Prusa i3 MK2 which is a RepRap printer.
Gordon I don't doubt you; but the issue (for me) was how to describe the resolution of a 3D printer ?; some of the truelly atrocious artifacts I have seen from cheap (I presume) 3D printers look like a sculpture made from , a 2mm diameter 'tube' of extruded thermo-plastic ! regards Rohan McLeod
Hi,
On 24 Oct. 2016, at 8:42 am, Rohan McLeod <rhn@jeack.com.au> wrote:
Gordon Heydon wrote:
Hi,
On 23 Oct. 2016, at 5:28 pm, Rohan McLeod via luv-talk <luv-talk@luv.asn.au> wrote:
Paul van den Bergen wrote:
pretty much the same as for regular printers.... XY resolution and Z resolution are typical. However, having said that, your results may vary... the resolution of the stepper motors (or laser) may well exceed the resolution of what can be accurately laid down, and certainly the minimum thickness of a single line of material may be considerably larger than that of the minimum resolution achievable kn a given surface. Yes from : https://all3dp.com/3d-printer-resolution/ It seems consumer 3D printers don't do much better than 0.3mm; but frankly even that seems better than the little 3Dprinted figurines I have seen; which off the top of my head seemed more like +/- 1.00mm ! Are the errors in 'dot size ' ( blob size ?) cumulative ? From : http://www.ilios3d.com/en/product-documentation/ilios-documentation-3dprint-... it seems there should be a "blobs per cubic centimeter " (bpcc ?) measure ; analogous to dpi in a traditional printer ? I think this is rubbish! I am a RepRap Wallace (very modified) and I am able to quite easily print to 100 microns (0.1mm). This main difference I find between RepRap printers and commercial ones like the Ultimaker is that RepRap require a lot more nursing and TLC compared to the high end printers and right now once of the best printers you can get is the Prusa i3 MK2 which is a RepRap printer.
Gordon I don't doubt you; but the issue (for me) was how to describe the resolution of a 3D printer ?; some of the truelly atrocious artifacts I have seen from cheap (I presume) 3D printers look like a sculpture made from , a 2mm diameter 'tube' of extruded thermo-plastic !
These days you don’t list resolution unless you are dropping below 100 microns. Describing the resolution is very hard since these is so many things that you need to take into account, and not having just one this tuned right just takes it from a good print to a bad print. I think the easiest way is to show examples. Gordon.
participants (3)
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Gordon Heydon -
Paul van den Bergen -
Rohan McLeod