Smooth rods dimensions for coreXY 300x300mm? August 23, 2015 07:03PM |
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Re: Smooth rods dimensions for coreXY 300x300mm? August 24, 2015 09:43AM |
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Re: Smooth rods dimensions for coreXY 300x300mm? August 24, 2015 12:19PM |
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Re: Smooth rods dimensions for coreXY 300x300mm? August 24, 2015 03:22PM |
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Re: Smooth rods dimensions for coreXY 300x300mm? August 24, 2015 04:44PM |
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Re: Smooth rods dimensions for coreXY 300x300mm? August 24, 2015 06:01PM |
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Re: Smooth rods dimensions for coreXY 300x300mm? August 24, 2015 07:43PM |
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Re: Smooth rods dimensions for coreXY 300x300mm? August 25, 2015 07:02AM |
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Re: Smooth rods dimensions for coreXY 300x300mm? August 25, 2015 11:16AM |
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Re: Smooth rods dimensions for coreXY 300x300mm? August 27, 2015 07:46AM |
Registered: 8 years ago Posts: 95 |
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cristian
Yes, I guess I have no other choice than builiding by trial and error unfortunately...
If I ever manage to build the printer, I will post some reviews of the linear guides I buy.
Thanks for your advices.
Re: Smooth rods dimensions for coreXY 300x300mm? August 27, 2015 05:31PM |
Registered: 9 years ago Posts: 344 |
Re: Smooth rods dimensions for coreXY 300x300mm? August 31, 2015 04:16AM |
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Re: Smooth rods dimensions for coreXY 300x300mm? August 31, 2015 05:31AM |
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Re: Smooth rods dimensions for coreXY 300x300mm? August 31, 2015 06:09AM |
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Re: Smooth rods dimensions for coreXY 300x300mm? August 31, 2015 09:19AM |
Registered: 8 years ago Posts: 95 |
Quote
J-Max
Hi,
To me, a wooden box may be stiffer than a module20 aluminium structure,
and you already have an enclosure. But it's maybe a question of look.
Through, the SmartRapCore have 6mm rods, which is a too small diameter IMHO,
even for the 220x220 regular print area. Some users upgraded to 8mm.
I can't imagine a 300x300 print area may work well with 6mm rods.
Through, maybe the output expectations are low.
With the 10mm MDF frame, which is noisy, the last problem with the SmartRapCore
is the genuine Z axis which is not stiff enough.
Some users upgraded to the andreasL's improoved Z axis.
I've tested it and it works pretty well.
Just two things about it, the maximum Z resolution on a full step is 0.2mm,
so you need a 0.9° motor to hope reach precisely 0.1mm or 0.05mm layers.
Or, you can add a reduction, geared or belt.
I'm curently building another coreXY printer inside a 19mm wooden box chassis.
Seriously, it's not expensive, very stiff, and stands well vibrations.
It's ways quieter than genuine SmartRapCore,
and better than other cheap aluminium profile printers.
To give you any comparison, it's closer as a module40 structure, maybe better.
I believe it can easily stand a 300x300 print area.
Anyways, the most important part should be the guides.
Did you made any choices ? I will probably use Hiwin MGN or maybe Igus W guides.
++JM
Re: Smooth rods dimensions for coreXY 300x300mm? August 31, 2015 10:18AM |
Registered: 9 years ago Posts: 722 |
Re: Smooth rods dimensions for coreXY 300x300mm? August 31, 2015 12:49PM |
Registered: 9 years ago Posts: 344 |
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J-Max
Well precision does not comes from your building material
but from your guides alignment and the lower play they allow.
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J-Max
To get a flat support, you can buy full aluminum flat profile, but at last 10mm thick.
It's better than aluminium extrusions module20 alike, even if it's a bit heavyer.
Those you can use them for chassis only.
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J-Max
For the guides, the load will always be lower than what the rail's static rated moment allows.
Even the Hiwin MGN 7 allows 2.84 Nm.
So don't waste your time to try to make a difference between them.
The two things important are the weight and the play.
No matter with the play if you buy a genuine rail system for a serious brand.
It will be definitely ways better than chinese smooth rods ones, and will last longer.
Throught, keep in mind these are consumables.
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J-Max
The Hiwin MGN 12 looks like a good choice, because the carriages
are large enough to mount our stuff on it.
Otherhand, the Igus W series are larger and lighter,
the play can be adjusted, and they cost less to change.
Both will need a good support anyways.
Quote
J-Max
Last, a rail selection depends of your budget too.
To me, it's more important to invest more into your rails,
than to spend 100€ or more for any expensive hotend.
++JM
Re: Smooth rods dimensions for coreXY 300x300mm? August 31, 2015 06:26PM |
Registered: 9 years ago Posts: 344 |
Re: Smooth rods dimensions for coreXY 300x300mm? September 01, 2015 04:04AM |
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Re: Smooth rods dimensions for coreXY 300x300mm? September 01, 2015 06:11AM |
Registered: 9 years ago Posts: 344 |
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J-Max
Misumi is a serious brand too.
Actualy, it's more expensive than Hiwin for the same quality.
Look at Hiwin documentation on their website,
you'll get the same kind of informations.
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J-Max
We're talking here about 20x20 profiles.
Just by resting my hand on a 300mm piece, it will bend quickly about 0.3mm,
while a 19mm MDF pannel won't bend half of that.
Quote
J-Max
If you own precise measuring tools, try this.
Re: Smooth rods dimensions for coreXY 300x300mm? September 01, 2015 07:17AM |
Registered: 9 years ago Posts: 722 |
Re: Smooth rods dimensions for coreXY 300x300mm? September 01, 2015 08:50AM |
Registered: 9 years ago Posts: 344 |
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J-Max
Forget theory a minute, get that small aluminium extrusion in hand, feel it, measure by yourself.
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J-Max
Theory is a perfect world where metal could win everything
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J-Max
especialy if you compares the wrong parts. Please read me again.
I did not compare that extrusion to a 20x20x300mm MDF piece, but to a 19mm pannel.
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J-Max
I just share my experience, I don't need to convince you.
Re: Smooth rods dimensions for coreXY 300x300mm? September 01, 2015 06:48PM |
Registered: 9 years ago Posts: 344 |
Re: Smooth rods dimensions for coreXY 300x300mm? November 16, 2016 04:02PM |
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