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Topic: Bed screws

Hey everyone,

I have a Da Vinci Mini, which I am enjoying as my first printer so far.  I have an issue with the screws (and 2 holes) on the bed.  The 4 screws that hold then bed down stick up slightly above the surface of the bed, so any time that I print anything that has to go over those areas, there is always a large amount of build up that accumulates until it usually evens out a bunch of layers up finally.  The last couple prints that I have been trying have apparently gotten caught on the little mountains that it forms and thrown off the rest of the print.  I have certainly tried to level them with an allen key, but they are as tight as they're getting.  Anyone else have this issue?  I'm trying to think of ways to fix it and am thinking of cutting a piece of glass 6.5 x 6.5" and placing that on top, recalibrating with the glass in place so it knows it's there, then living happily ever after.  Sound like a good idea, or are there better ideas?  Thanks!

I'll post a pic of the issue shortly.

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Re: Bed screws

I would think the usable area of the mini is inside those screws. There are many printers out there that do not utilize the entire bedd and the mini is one such printer. You should not be printing objects on it whos dimensions would bring it over those screws.

3D Printing since the Cupcake (2009) and still addicted.
CT'c Duplicator Dual upgraded with MK10 extruders and Azteeg X3 Pro with Viki2 LCD with Marlin. Prints PLA, PET+, PETG, and ABS.

3 (edited by sdemaio 2017-02-16 18:24:51)

Re: Bed screws

carl_m1968 wrote:

I would think the usable area of the mini is inside those screws. There are many printers out there that do not utilize the entire bedd and the mini is one such printer. You should not be printing objects on it whos dimensions would bring it over those screws.

The screws are most certainly in the printable area... They are well inside and you can't print outside of the designated area even if you wanted to. That is not the issue - these screws mount it to the base below it and are intended to be flush on the surface, but they are not. The mini also uses almost the entire bed to print.  Its printable area is 5.9" and the bed is 6.5", so there is just over a half an inch that is unused.

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Re: Bed screws

Here's a picture of the beginning of a print.  You will see the 6 mountains of material where it hits, and eventually gets caught and throws off the alignment.  You can see the second shape which is off to the right by a good amount, indicating that it got caught while travelling to the left, and thought that it was further to the left than it actually was after getting bound up.  I'm thinking a simple piece of glass on the bed and a recalibration will take care of everything, but just wanted to see if anyone else had the issue and what they did to resolve it.  Thanks!


http://soliforum.com/i/?Lv9rdYR.jpg

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Re: Bed screws

I would just use a dremel and a sanding drum and make them flush. The glass may be too thick for the calibration methods and allowances of this machine. There is not much adjustability as it is.

3D Printing since the Cupcake (2009) and still addicted.
CT'c Duplicator Dual upgraded with MK10 extruders and Azteeg X3 Pro with Viki2 LCD with Marlin. Prints PLA, PET+, PETG, and ABS.