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I've searched the group and all over the internet and could not find an answer so I'm hoping someone here can help me.
What happens is when I print a file the height of the printed item is squeezed. I lose about 0.2mm in 4mm. X and Y dimensions are spot on. I print these items flat on the buildplate. The height of their base is not important just the bit above the base so printing with supports would not help.
The picture is just an example to explain. I'm printing something more detailed so I know that the distortion or squeeze is proportionate i.e. I'm losing a bit of every layer rather than losing the first few layers or a big chunk at the end or anywhere else.
The printer is leveled properly I've been using it for 18 months with no issues. I'm using Monocure rapid clear resin 0.03 / 12s / 1 (10 bottom layers 70 s exposure no issues with it sticking to buildplate). I suspect it has something to do with the resin or my settings because I have just checked previous prints where I used Monocure rapid Clear (30%) and Monocure flex (70%) mix and the heights came out perfect.
I'm trying to print functional parts so they need to be accurate in every direction.
Has anyone had similar issues and found a solution? Please let me know. Thanks

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Just a quick one. I'm trying to buy some Monocure flex 100 in the UK. I might be wrong but so far the cheapest option even with postage is to buy it from Monocure directly. (I don't mind waiting longer)
Has anyone bought it from them in the UK? If so can you please tell me if you have been charged any extra for customs/taxes like when you buy something on ebay from outside the EU?
One more related question. Has anyone tried the Photocentric Flexible resin FOR UV LCD PRINTERS? I've read about people trying and struggling with the DLP or daylight ones but not the LCD one. Any experience anyone? Thanks
https://photocentricgroup.com/product/uv-lcd-flexible-resin/ 翻譯年糕

Has anyone used this with their printer? Would it work?
£54 for 1kg and it is flexible.

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In the last few days I've seen group members with the same issue I had with my printer: random restarts mid print. I've struggled with this for more than a month and tried everything to sort it without success. Since I know how frustrating it is too troubleshoot your printer just for everyone's information the final solution seems to be working. If you search "ref voltage" in the group my post will come up with the solution. All you need is a screwdriver and a multimeter. Could the admins possibly add this as one possible solution to help others? I'm only writing this because after struggling for the first 6 weeks with my printer in the last month I've been printing away with no problems whatsoever. I hope this will help others since I've got so much help in this group.

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Hello there people! I've been struggling with my printer from day one since it was always turning off and back on again randomly. I have tried everything I have already written a long post about it don't want to bore you with it. I've also learnt that many of us are struggling with the same issue. Well I don't want to jinx it but I might have a solution. Also many questions. If you follow what I've done DO IT AT YOUR OWN RISK PLEASE! You can also follow this post before doing anything to your printer you should not, someone more knowledgeable might tell me off for what I did, any advice is welcome. One more thing I do not mean to take credit for this I just volunteered myself as a desperate guinea pig following the suggestions of Vinicius Silva .
Here is what I've done:
I have followed this post first of all:
https://www.facebook.com/media/set/…
In here you'll find a potentiometer and a reference voltage. As far as I understood the maximum of this reference voltage is 1.2v. In the post Vinicius Silva said his was 1.07v. When I checked mine it was only 0.93v. I have turned it up to 1.16 (random number quite hard to get an exact number did not want maximum but wanted to turn it up please let me know if this was stupid of me).
Now. Ever since I did this (only yesterday) the printer seems to work without issues. It might be unrelated but it seems to me that the fans don't slow down when the uv light comes on and everything just feels more powerful about the machine. I have upgraded to the latest firmware from AC website. Just printed the test cube from the original pendrive with no issues whatsoever. This is a first for me. Also the random beeps have gone.
One issue I'm worried about if this extra power would fry something in the printer in the long run. Also the stepper motor feels quite hot. In another post people told me that it is quite normal to certain extent but would be more relaxed about it if I knew temperatures or some way to test if it's safe.
Once again sorry for the long post. Any advice or telling me off is welcome I'm here to learn and share info about the printer.
In the long run if it turns out that this sorts out this issue we could tell AC about it so they could double check the ref voltage before shipping the printers they could save a fortune on warranty issues and ease the headache of their customers.
If in the next few days the printer fails again I'll delete the post I don't want to cause confusion.

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I do not want to speak too early but there might be hope after all for all of us with randomly stopping and restarting printers! Still testing but it looks promising so far.

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Does anyone know by any chance if it's normal for the stepper motor to get quite hot whilst printing? Thank you

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I am absolutely desperate now to find out what causes this. It's been happening since day 1. I have already posted about this.
I have already tried the followings:
Dry run: I haven't managed to generate the same symptoms. I might not have tried enough times.
Printed the test cube (Anycubic suggestion). It had stopped after a few layers.
Tightened the FEP film (Anycubic suggestion): did not help.
Bought an 8A power pack:did not help
I've taken the printer apart checked all connections:all seem fine.
I have tried to shorten the exposure time of the bottom layers down to almost the same as the normal layers:first it seemed to help but then it failed as well as the other solutions.
I am using a very good quality branded usb stick freshly formatted. I make sure that the file name is simple and that there are no other files on the stick.

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UPDATE I have tried to print with the USB plugged in the main board directly. Did not help.
Also firmware update did not help. (memory error code: M_11800 at 5% then after unplugging and plugging back the usb stick as per error message suggestion when pressed yes the printer switched itself off then back on again to normal boot screen)
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First I thought it was the resin sticking to the FEP too strongly and the stepper motor struggled to lift the build plate and overloaded the power pack but after I finally managed to take a video of it I have realized that it stops after the build plate sinks in the resin right on the FEP and just before the next layer would appear on the UV display.

Sorry about the long post. I'd be REALLY GRATEFUL for any suggestion.

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Hi there Photon People! I have just got my printer a couple of days ago. I have managed to print one small item on first try with no problem. I tried it again in a couple of days. I cleaned everything beforehand it was a fresh print. The printer stopped mid print, the build plate stayed in the vat. Ever since I have been trying to print something about 4-6 times I have tried now the exact same thing happens. At between 40-50% of a 20 minute print 50 to 70 layers only the printer just cuts off for about a second then turns back on again to the state when you first turn it on. I have tried different branded/quality USB sticks. I have formatted them. I have tried different models. Tried the same model sliced again. It's always the same. Seems to me it's a hardware issue. I have written to Anycubic and yet to receive a reply.
I have read here that I'm not the only one with this issue.
My question is whoever had similar problems how did you manage to sort it out? Is there any point waiting for Anycubic? The printer has only arrived 5 days ago.
One more thing. The power pack which previously had been suggested as possible source of this problem only gets warm not even hot. I have put it on something so air can circulate around it freely. The cable from the power pack to the printer seems rather thin.
Any advice is much appreciated!

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