Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 13, 2015 02:26PM |
Registered: 9 years ago Posts: 367 |
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cvanclev
Decided to reprint some of the included black PLA parts to fix the quality issue, as I have access to a Dimension Elite ABS printer. Upon opening the STL's in Solidworks 2014, I was getting measurements of 50+ *meters* in length on some small parts like the carriage mounts. Anyone else attempt to work with the STLs on the drive and have this issue? Massively scaled up. Could just be Solidworks? I've used Solidworks to generate STLs but rarely open them up with the program.
Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 13, 2015 02:28PM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 13, 2015 02:51PM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 13, 2015 03:00PM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 13, 2015 03:39PM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 13, 2015 04:07PM |
Registered: 9 years ago Posts: 367 |
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cvanclev
Thanks animoose! You've been such a great resource on this forum and in your blog. I'll provide whatever tips and assistance I can when I begin the build later this week. I think you are correct regarding the STLs and unit specification. As a corollary, did you have to manually scale in Reptier/Slic3r?
Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 13, 2015 06:56PM |
Registered: 9 years ago Posts: 135 |
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animoose
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cvanclev
Thanks animoose! You've been such a great resource on this forum and in your blog. I'll provide whatever tips and assistance I can when I begin the build later this week. I think you are correct regarding the STLs and unit specification. As a corollary, did you have to manually scale in Reptier/Slic3r?
I did no manual scaling, but I did need to tune the parameters a bit. I could not fit a LM8UU into the initial print. After some advice from another thread, I tried changing the extrusion multiplier to 0.85 and setting external perimeters first, and it was much better. I haven't used the mounts for real yet, just checked whether I can get a LM8UU to fit in them.
Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 13, 2015 08:28PM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 13, 2015 09:57PM |
Registered: 9 years ago Posts: 81 |
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mel0n
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animoose
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cvanclev
Thanks animoose! You've been such a great resource on this forum and in your blog. I'll provide whatever tips and assistance I can when I begin the build later this week. I think you are correct regarding the STLs and unit specification. As a corollary, did you have to manually scale in Reptier/Slic3r?
I did no manual scaling, but I did need to tune the parameters a bit. I could not fit a LM8UU into the initial print. After some advice from another thread, I tried changing the extrusion multiplier to 0.85 and setting external perimeters first, and it was much better. I haven't used the mounts for real yet, just checked whether I can get a LM8UU to fit in them.
HMMM that's interesting. Everything I have printed so far has been dimensionaly good enough. Most things come out a tiny bit too tight, but that's good because some parts need to be tight (such as ball joint mounts like on my RPI camera) and anything else can be filed out (I found a small set of hand files to be really invaluable for 3D Printing). I just finished printing a replacement x motor mount. The old one cracked, but looking at the design theres no strength where it cracked so maybe it was supposed to. If you look on the right side, you will see that it cracked on that side as well, so it's cracked on both sides of the bearing holder. I think this may have to do with misalignment of the z rods. I also think that the cracks are allowing it to absorb a lot of the vibrations from the motor so its actually a lot quieter. You can see where the bearing is out of alignment with the mount. It is printing really well as you can see in the replacement part (the ripples on the edge are from the brim). I tested an LM8UU bearing in it and it fits nice and snug. I was using 100% flow, 100% feed, with fine tuned extruder e-steps.
Pics:
[imgur.com]
Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 13, 2015 10:10PM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 13, 2015 10:50PM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 13, 2015 11:07PM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 13, 2015 11:31PM |
Registered: 12 years ago Posts: 335 |
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wderoxas
Darn. An enclosure was on my to-do list. How bad was the meltdown and which part of the x axis were affected?
Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 14, 2015 02:33AM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 14, 2015 03:18AM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 14, 2015 08:14AM |
Registered: 9 years ago Posts: 135 |
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wderoxas
Those brackets are only needed for the Y- idler. You should only get two of those. You got a bunch of them?
Standard corner brackets are L-shaped with set screw inside.
If they have switched their corner brackets, then you should have a lot of T- nuts too.
If this is the case, and you didn't get at least two of those L-shaped corner brackets, then you'll have a problem installing the Z rods.
Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 14, 2015 09:55AM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 14, 2015 11:50AM |
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cvanclev
I was provided with five of the brackets in my first photo, and zero of the ones pictured here. The M4 bolt head falls right through the brackets I have now. Could use a washer and make it work, but wondering if I would run into height problems on the Y axis idler. Can't tell yet as I'm not far enough into the build to know how much clearance I need for the bed.
Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 14, 2015 02:05PM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 14, 2015 08:39PM |
Registered: 9 years ago Posts: 7 |
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nonfish
Is anyone else having problems with the extruder oozing where it shouldn't - out the top and around the nozzle? Pictures Here. This is after only a few minutes running; every 15 minutes of printing or so I need to manually clean the nozzle to not get massive deposits in my print.
Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 14, 2015 09:39PM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 14, 2015 09:53PM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 14, 2015 10:11PM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 14, 2015 10:26PM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 15, 2015 12:44AM |
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tmiller74
Yes, I got the same brackets in my kit yesterday. They work with an oversized M4 washer but it isn't ideal.
My first showstopper was the very next step where you mount the smooth rod blocks to the M5 T nuts using the M5x8 bolts. The blocks I got are 6mm thick at the base, there's roughly a 1mm gap below the base to the top of the T nut even when you hold the dang thing upside down. So doing the math I can fit roughly one thread of the bolt into the T nut. Not nearly enough. Ordered some M5x10 bolts from McMaster Carr since the local hardware stores have extremely crappy metric hardware selections. Part of the fun of assembling a kit, I guess.
My RAMPS board also looks exactly like the first one posted, down to the bent-to-crap pins and solder blobs, bridges, and cold joints all over the back. I'm not very impressed that they admitted they had a vendor quality issue, claim to have fixed it, yet are still shipping shoddy parts. I'll clean up the obviously bad solder and hope that everything is in working order.
Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 15, 2015 01:19AM |
Registered: 9 years ago Posts: 135 |
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691175002
Alright, finally got some reasonable prints. I am using the enclosure again, but with some tweaks to avoid melting the printer components. My heated bed is now set to 70c for all layers (previously 105c). I I have also turned the X and E steppers down to 0.15V (previously 0.35V) and will probably go even lower. I also leave the door ajar and periodically check the temperature to avoid going higher than 40c.
ABS at 0.2mm
There is still a bit more tweaking I can do in the slicer but I think I've basically hit the mechanical repeatability limit of the printer. There is quite a bit of slop in the bearings and compliance in general, but for a $270 printer I can't really complain.
Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 15, 2015 01:26AM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 15, 2015 08:16AM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 15, 2015 08:40AM |
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Re: Folger Tech 2020 i3 Printer Kit (Official Thread) July 15, 2015 09:00AM |
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