I learned something today the hard way. I’ve had my ACP for a week, my first DLP, but I’m not new to 3D printing having used FDM machines for years. After a week of looking at blobs dirtying up my FEP and reading a billion and 1 posts about how to stop stuff sticking to it, I did something drastic: I ignored the same blunt and respected answers and thought about problem myself.
The issue was that I am using a bottle of Resin that turns up in none of the spreadsheets - Anycubic Eco Black. I got the eco by accident, but I wanted black because I’m going to use this machine as part of a specific workflow. There’s some eco products on the spreadsheet so I used some of the data as a basis. As the prints failed and I found myself cleaning and readjusting, I kept on sticking to the same logic: try greater exposure times on your base. I must have the alignment wrong.
And still I spent half my afternoon cleaning stuff... with square blobs my only friend. There were pops and pops.. something seemed to be sticking.. but no. All to the FEP.
Eventually it occurred to me: is it possible that I’m over-exposing this to the point of fusing it to the FEP? And online search came up with only a couple of hints that this could happen. But I tried it anyway - dropping it below the initial 60 seconds I first tried. And blow me down if it didn’t work perfectly. I used a calibration piece (as shown) and it simply pulled up perfect.
So to any newbie getting stuck prints and getting the same 4 answers when you ask for help, my lesson is this: ignore those dogmatically repeated questions. They aren't diagnosing, and you shouldn't outsource it.
Oh... and yes, you can over expose your base. Try dropping the time.
翻譯年糕
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