making nut installer sticks
Greetings all;
Back asking for trig help from the knowledgeable folks here.
This printer I have coming, a twotrees Saphire-5, a corexy has a 300mm
square build plate. But 300mm isn't enough to make nut installer sticks
unless I build it running diagonally on the bed. then I have enough
sticking out for a handle so I can install half the rail mounting nuts
from each end of a 555mm carbon fiber tube on the tronxy.
So, on a 300mm sq bed, what is the diagonal, as in how long can I make
the installer sticks?
I'll use two, one, a strip to hold half the nuts, and one to jack the
nut strip up against the inside of the tube or let it wiggle or fall off
the nuts so the sticks are are removable once the rail is installed.
Those bolts in the steel rail are spaced nominally at 20mm, should I
space the nut pockets to compensate for the shrinkage of PETG as it cools?
That is a potential problem I've not encountered with smaller stuff
before, but it could happen on this long a part when trying to match
existing steel parts. I guess the temp diff between build and use to be
60C colder in use range. With glass beds, I run beds at 90C if the
printer can do it. I've a feeling my for loop placing the nut pockets
ought to step at 20.005 to be 20 when cooled?
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, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/
I can not speak for your printer - but on my ANet with Marlin there is a scaling option for each axis - steps per mm - so you produce the STL to size and can scale up the print for any general errors/shrinkage in any direction.
Producing threads/holes/nut holes to that level of precision 0.005mm is not really possible with a 0.4mm extruder - there are a number of variables - layer heigh, print speed, material, temperature, bed temperature that will affect how the material will slump and reduce the cavity size. So it generally comes down to experiment and measure to see how your set up actually works.
A 300mm bed has a mechanical diagonal of 300 times root 2 or 424mm but the actual amount usable will reduce depending on your part width and shape.
cheers
Bob
On 3 Dec 2022, at 14:15, gene heskett gheskett@shentel.net wrote:
Greetings all;
Back asking for trig help from the knowledgeable folks here.
This printer I have coming, a twotrees Saphire-5, a corexy has a 300mm square build plate. But 300mm isn't enough to make nut installer sticks
unless I build it running diagonally on the bed. then I have enough sticking out for a handle so I can install half the rail mounting nuts from each end of a 555mm carbon fiber tube on the tronxy.
So, on a 300mm sq bed, what is the diagonal, as in how long can I make the installer sticks?
I'll use two, one, a strip to hold half the nuts, and one to jack the nut strip up against the inside of the tube or let it wiggle or fall off the nuts so the sticks are are removable once the rail is installed.
Those bolts in the steel rail are spaced nominally at 20mm, should I space the nut pockets to compensate for the shrinkage of PETG as it cools?
That is a potential problem I've not encountered with smaller stuff before, but it could happen on this long a part when trying to match existing steel parts. I guess the temp diff between build and use to be 60C colder in use range. With glass beds, I run beds at 90C if the printer can do it. I've a feeling my for loop placing the nut pockets ought to step at 20.005 to be 20 when cooled?
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, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
I generally scale up by 1.0059 to compensate for shrinkage. Seems to work
for both PLA and ABS. YMMV.
On Sat, 3 Dec 2022 at 14:53, Bob Carter caggius@gmail.com wrote:
I can not speak for your printer - but on my ANet with Marlin there is a
scaling option for each axis - steps per mm - so you produce the STL to
size and can scale up the print for any general errors/shrinkage in any
direction.
Producing threads/holes/nut holes to that level of precision 0.005mm is
not really possible with a 0.4mm extruder - there are a number of
variables - layer heigh, print speed, material, temperature, bed
temperature that will affect how the material will slump and reduce the
cavity size. So it generally comes down to experiment and measure to see
how your set up actually works.
A 300mm bed has a mechanical diagonal of 300 times root 2 or 424mm but the
actual amount usable will reduce depending on your part width and shape.
cheers
Bob
On 3 Dec 2022, at 14:15, gene heskett gheskett@shentel.net wrote:
Greetings all;
Back asking for trig help from the knowledgeable folks here.
This printer I have coming, a twotrees Saphire-5, a corexy has a 300mm
square build plate. But 300mm isn't enough to make nut installer sticks
unless I build it running diagonally on the bed. then I have enough
sticking out for a handle so I can install half the rail mounting nuts from
each end of a 555mm carbon fiber tube on the tronxy.
So, on a 300mm sq bed, what is the diagonal, as in how long can I make
the installer sticks?
I'll use two, one, a strip to hold half the nuts, and one to jack the
nut strip up against the inside of the tube or let it wiggle or fall off
the nuts so the sticks are are removable once the rail is installed.
Those bolts in the steel rail are spaced nominally at 20mm, should I
space the nut pockets to compensate for the shrinkage of PETG as it cools?
That is a potential problem I've not encountered with smaller stuff
before, but it could happen on this long a part when trying to match
existing steel parts. I guess the temp diff between build and use to be 60C
colder in use range. With glass beds, I run beds at 90C if the printer can
do it. I've a feeling my for loop placing the nut pockets ought to step at
20.005 to be 20 when cooled?
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, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
On 12/3/22 09:53, Bob Carter wrote:
I can not speak for your printer - but on my ANet with Marlin there is a scaling option for each axis - steps per mm - so you produce the STL to size and can scale up the print for any general errors/shrinkage in any direction.
Producing threads/holes/nut holes to that level of precision 0.005mm is not really possible with a 0.4mm extruder - there are a number of variables - layer heigh, print speed, material, temperature, bed temperature that will affect how the material will slump and reduce the cavity size. So it generally comes down to experiment and measure to see how your set up actually works.
A 300mm bed has a mechanical diagonal of 300 times root 2 or 424mm but the actual amount usable will reduce depending on your part width and shape.
And as another poster responded, how far out to the edge the bed heating
goes.
I wasn't concerned with the nut size, that's easily tested with a ten
minute build, my question was re the inter nut spacing, an error getting
progressively worse as the step and repeat of a for loop progresses.
That PETG shrinkage over longer distances concern remains.
Sorry, I didn't make that clearer.
The rest of it is now rhetorical, I was able to find the printer in
cura's listings, add it to cura, and see test slicesat a 45 degree
layout. So I'll go back to lurking. My apologies for the noise.
Take care and stay well, 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, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/
The total possible length is 300 * sqrt(2). Round down a little.
On Sat, Dec 3, 2022 at 12:48 PM gene heskett gheskett@shentel.net wrote:
On 12/3/22 09:53, Bob Carter wrote:
I can not speak for your printer - but on my ANet with Marlin there is a
scaling option for each axis - steps per mm - so you produce the STL to
size and can scale up the print for any general errors/shrinkage in any
direction.
Producing threads/holes/nut holes to that level of precision 0.005mm is
not really possible with a 0.4mm extruder - there are a number of
variables - layer heigh, print speed, material, temperature, bed
temperature that will affect how the material will slump and reduce the
cavity size. So it generally comes down to experiment and measure to see
how your set up actually works.
A 300mm bed has a mechanical diagonal of 300 times root 2 or 424mm but
the actual amount usable will reduce depending on your part width and shape.
And as another poster responded, how far out to the edge the bed heating
goes.
I wasn't concerned with the nut size, that's easily tested with a ten
minute build, my question was re the inter nut spacing, an error getting
progressively worse as the step and repeat of a for loop progresses.
That PETG shrinkage over longer distances concern remains.
Sorry, I didn't make that clearer.
The rest of it is now rhetorical, I was able to find the printer in
cura's listings, add it to cura, and see test slicesat a 45 degree
layout. So I'll go back to lurking. My apologies for the noise.
Take care and stay well, 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, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
I don't consider individual dimensions. I just model with the actual
dimensions I wan't and then scale the whole print up by 1.0059 in the
slicer.
On Sat, 3 Dec 2022 at 19:18, Father Horton fatherhorton@gmail.com wrote:
The total possible length is 300 * sqrt(2). Round down a little.
On Sat, Dec 3, 2022 at 12:48 PM gene heskett gheskett@shentel.net wrote:
On 12/3/22 09:53, Bob Carter wrote:
I can not speak for your printer - but on my ANet with Marlin there is
a scaling option for each axis - steps per mm - so you produce the STL to
size and can scale up the print for any general errors/shrinkage in any
direction.
Producing threads/holes/nut holes to that level of precision 0.005mm is
not really possible with a 0.4mm extruder - there are a number of
variables - layer heigh, print speed, material, temperature, bed
temperature that will affect how the material will slump and reduce the
cavity size. So it generally comes down to experiment and measure to see
how your set up actually works.
A 300mm bed has a mechanical diagonal of 300 times root 2 or 424mm but
the actual amount usable will reduce depending on your part width and shape.
And as another poster responded, how far out to the edge the bed heating
goes.
I wasn't concerned with the nut size, that's easily tested with a ten
minute build, my question was re the inter nut spacing, an error getting
progressively worse as the step and repeat of a for loop progresses.
That PETG shrinkage over longer distances concern remains.
Sorry, I didn't make that clearer.
The rest of it is now rhetorical, I was able to find the printer in
cura's listings, add it to cura, and see test slicesat a 45 degree
layout. So I'll go back to lurking. My apologies for the noise.
Take care and stay well, 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, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
OpenSCAD mailing list
To unsubscribe send an email to discuss-leave@lists.openscad.org
On 12/3/22 18:15, nop head wrote:
I don't consider individual dimensions. I just model with the actual
dimensions I wan't and then scale the whole print up by 1.0059 in the
slicer.
And that makes perfect sense, thank you nop head.
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, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page http://geneslinuxbox.net:6309/