A delta with colourful lights
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Very nice build. Don't recall seeing an enclosed delta before. Is this for ABS? What kind of chamber temperature do you get?
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@zapta said in A delta with colourful lights:
Very nice build. Don't recall seeing an enclosed delta before. Is this for ABS? What kind of chamber temperature do you get?
It's not really for ABS, though I have a coupel of spools of that I keep meaning to use up. Honestly, there's probably no very good functional reason.
I did find that my Prusa became much more just-print-on-demand and much less aggro and fiddling when I put it in an enclosure, but I suspect that might be because before it was in an enclosure it was just sat out on the side in a family room and got moved around and so on. When it went into an enclosure it did so in a less boisterous room, and never gets moved, so it might be the not getting disturbed that made the real difference. A metre-high 20kg delta doesn't get just moved here and there, so possibly wouldn't suffer the same.
The enclosure kills a bit of the whine from the little E3D fan (I'm looking forward to the Revo hotend, but fear the even smaller fan will be even whinier).
The enclosure has no active heating (just the effect of bed and hotend). I generally set the vent to run its fan from 35C, and I've never tried (yet) to see what it could / would get to. There is an SSR in the base with half a mind to put enclosure heating in it in future, but I'm mostly happy with PLA and PETG!
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@achrn said in A delta with colourful lights:
The enclosure kills a bit of the whine from the little E3D fan
That's also my experience with Vonron V2.4. The panels edges are sealed with 1x5mm adhesive foam and I think that also helps. I am getting about 40C chamber temperature with 105C bed temp and never had any ABS adhesion, warping or lamination issues.
It seems that you are using UHP power supplies, they are compact, efficient, fanless and stay cool, I like them. You could eliminate the high power one by running the bed heater of mains voltage (the bed is static so less safety concerns).
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@zapta said in A delta with colourful lights:
It seems that you are using UHP power supplies, they are compact, efficient, fanless and stay cool, I like them. You could eliminate the high power one by running the bed heater of mains voltage (the bed is static so less safety concerns).
Yes a UHP-350-24 and a UHP-200-12. The bed is already on 240V. The power supplies are probably overkill, but
1: I wasn't 100% sure where I was headed when I started building, and I bought them early for testing electronics so they were chosen more as as-big-as-would-fit rather than careful consideration of ratings
2: As previosuly noted I'm superstitous about PSUs - in addition to not putting them on SSRs and making sure they have lots of heatsinking I like them to have a good amount of headroom. -
@achrn Nice build! Any lights inside to light up the print? White lights make seeing and photographing the print easier, and UV makes fluorescent prints look really nice as they are printing.
In my experience, once you can print ABS reliably, there's no reason to print PLA, unless someone in the house complains about the smell. In that case, PETG will work for many prints. Of course all may be hazardous to your health, whether you can smell something or not.
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@mrehorstdmd said in A delta with colourful lights:
@achrn Nice build! Any lights inside to light up the print? White lights make seeing and photographing the print easier, and UV makes fluorescent prints look really nice as they are printing.
Yes, a run of cool white LEDs (60/m) full height behind both the front two extrusions (actually fixed to the 'glazing bar' at the corner between two panes). There's lots of light when they are on.
They do make it easier to see detail when it's printing. Interestingly with my (fairly new) mobile phone the photos taken with them on are almost indistinguishable to those with them off - the exposure / colour balance / whatever in the phone tunes them out.
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@zapta
That 40 degree is not enough for the ABS , at least for big parts. In my delta I started with that too... a single plexy layer and the result was poor. Then I doubled the plexy separated with foam and still the dispersion of so big surface was too much for rise the inner temp at decent level. Now applying a full surface of 3-5cm of foam for all the inner faces I can get good result over 60 degree ... and finally this damn ABS didn't bend anymore. -
@giostark said in A delta with colourful lights:
That 40 degree is not enough for the ABS , at least for big parts.
It seems to work well for me. Haven't had a problem yet. If in doubt I add brim. Here is an example of a part I printed the other day, 4 hours, no warping, no lamination issues, added brim just in case because the base is hollow. Same results for a long part I printed a few weeks ago diagonally from corner to corner.
I also heard that ABS+ is every easier to print but haven't had a reason to try it.
I am using a Voron V2.4 250mm and didn't work too hard to seal it, for example, the panels are help only at the four corner without the mid-length screws. I also don't pre-heat it, just let the bed and nozzle reach their respective temperatures and starts printing immedietly.
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@zapta
Yea , I'm aware that some part can be printed also if big but those part benefit of "good" or very regular design that don't allow too much inner tension of the material.
Ex: In this part on the left there was a circle (it is a conveyor) . The vertical left and right side adjacent the circle , at 40 degree were bended toward the inside. Resulting in a non vertical strait line.
The only way to make them strait was reach an higher chamber temp.
My task in building the chamber was be free to print without the warp or bending agony despite an non optimal design of the part.
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@giostark said in A delta with colourful lights:
Yea , I'm aware that some part can be printed also if big but those part benefit of "good" or very regular design..
Yea, I'm aware that some parts may benefit from chamber temp of 60C over 40C.
That's a nice print in the picture you posted.
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