Got today my Photon.
As of what i read it was clear for me as a meticulous person to check how flat is flat.
By my means to work with layers of 0,025mm at least the buildplate should have pretty close tolerance to reach this preciseness.
1. The plate who holds the balljoint down to the bed had a gap. Decided when allready here somethings is wrong to take apart the whole thing. Not to mention the balljoint had zero grease on it !
2. Checked the bed with a schublehre, OK flat is not really flat. You can see a gap in the middle of the bed.
How much it is ? I dont know, but sure it's more then a layer-size of 0,025 mm !
3. I searched for a very flat aluminum panel. Painted it black with a permanent marker. On this i can move the buildplate to see exatly where are recessed areas.
4. Buildplate along side with the aluminum plate.
Markings on the aluminum plate and buildplate show clearly it's uneven.
5. Marked with red where are the raised areas.
What now ?
For the moment nothing.
I know the buildplate is not really flat.
I'll do a 1st print and see if this is a issue.
If so then needs to be proffessionally grinded flat.
Of no issue FINE.
翻譯年糕