Feedback about users' suggestions

admin

1. The circle purge tower and tree supports are the main thing to look into I think
Our answer: Thanks for your suggestion, yes we now are testing the circle purge tower, will update to you soon. And the tree supports may be not suitable for PVA materials, the support is easy to be rupture,but we will continue testing and share with you.

admin

Hi there,here is for our feedback about users' suggestions on dual extruder 3d printer,welcome to share your ideas!

admin

MikeK Posted at 2020-11-29 03:05
Tree supports are working fine for me with PVA. You just need to lower your support printing speed,  ...

When we testing PVA support, it is easy to break in three places:
1 For the first layer, if the RAFT base is used, the adhesion between PVA and PLA is not good, so the support is likely to fall off.
2 In the middle, if print the tree support, it is easy to break. According to what you said, reducing the speed and increasing the wall thickness and filling will improve.
3 Support the contact part of the entity. The same problem is the viscosity of the two materials. Generally, we produce a surface as the contact entity.

MikeK

Speaking of direct drive, it helps a lot with PVA also. And I'd assume it would be way easier to remove just the entire 3d printer assembly with extruder, motor, hot end and all at once with direct drive.

Please let me know if you'd like any assistance with the direct drive testing or design.


If you're worried about weight on the X, use a pancake stepper motor instead with a BMG extruder for torque multiplication.
2 BMGs with 2 pancake motors weighs less than a 310x310x4mm plate of glass most people run on big printers bed.

admin

2.Direct drive is more reliable than bowden with less wear parts。All metal hot ends for no degrading of PTFE tubes。wire holders to prevent snagging
Answer:Yes you are right,direct drive has many advantages,the reasons we didn't choose are:
1.We want to make a module design printer which can be expanded to other functions,reducing the replacement of parts,bowden drive is more convenient to replace parts when you need use another function.
2.Bowden drive can make the extruder lighter,moving faster.
3.But at the same time we will spend time to test derect drive.

MikeK

Tree supports are working fine for me with PVA. You just need to lower your support printing speed, adding some infill to the trees helps too (about 3-5% lines), you can also increase the walls of the tree from 1 to 2 and that helps quite a bit.