I had an enormous amount of ringing/ghosting with my flash. After making sure all belts were tight, the TMC2100's where on 1.05V and there were no other loose parts, I didn't know what to do.
The best solution so far: Tighten the roller wheels so that the bed and extruder aren't moving freely anymore (but a lot of wear on the wheels...), so it dampens the ringing a little bit. Also the acceleration is reduced to 1000mm/s and the jerk to 5.
I print at 30mm/s by the way, so not even that fast. The ringing is no "somewhat" under control. Here is a picture of the ringing before the reduced acceleration.
Anyone who has the same problem?
When you order the new TEVO Flash from Banggood, you can pick "European Direct Mail". This route makes sure you won't get charged afterwards with taxes. In my case this means I don't have to pay the 21% tax and 4% import, almost €90.
One REALLY important note: Banggood claims this shipping method takes 7-20 days, this isn't always the case. There are reports from shipping times up to 30 or 40 days. But hey, you don't have to pay taxes!
You can find the printer here: https://www.banggood.com/TEVO-Flash-98-Prebuilt-3D-Printer-Kit-235235250-Printing-Size-p-1311319.html?p=TC11053751477201602P
So, TEVO talks about a "glass-ceramic build plate" in the specs of the TEVO Flash. I wasn't really sure if this was just a marketing term or really something "special". Most reviews I saw said something along the lines "Build plate look like normal glass", so I contacted TEVO.
The build plate is indeed a special kind, not just regular glass (or boro). This glass type plate is baked in an oven, just like normal ceramics. It's something like the ones on the Airwolf AXIOM printers. The pros are: Better heat resistant and strength, no more chipping, better heat transfer and better adhesion to the print. So far it looks like it sticks better than boro glass, but it's not the same as a special non-glass surface like the one on the TEVO Tornado.