Neoden Frameless printer. Any users?

[TankSparks]

Neoden Frameless printer. Any users?
I can't find any video on it.  Can't see how hard it is to use and how the PCB board mounts.
Anybody else make frameless printers.

[lutkeveld]

I have one. It's of decent quality.
Mounting the board is a bit annoying and time consuming, but not different from many other manual printers.
Adjusting the position (x, y, rotation) is quite smooth.
Tensioning the stencil is okay, but overall it is better to get a pre-tensioned stencil, especially for small feature size.
The main upside is that frameless stencils are cheaper (both in production, as in shipping). Over the long run, it pays out if you do any volume.
If your volume is not that high, I would just go with a cheaper printer for framed stencils.

[TankSparks]

Why is it annoying to mount the board?  Any pictures of the board mounted.  Does the board require holes?

[MR]

https://spide-smt.nl/portfolio-item/sd300/

i use this one for prototype runs, I have no problems with frameless stencils I use to order them in a size that fits.
Lately we did a large panel that almost used the entire size of the stencil printer and it also worked.
The tensioning of the stencil more or less only depends on the strength of the spring which is used on both sides of the printer

Does the neoden use springs?
If not I'd add them it's the key of having the stencil firm inside the printer, they're not so expensive and can be sourced just about everywhere (including a lock).

I'm using a microscope to adjust the printer and match the QFNs, those 10$ microscopes can also do the job and verify the location.
I would definitely recommend to use a microscope if you use this kind of stencil printer.

[lutkeveld]

Why is it annoying to mount the board?  Any pictures of the board mounted.  Does the board require holes?

Its visible on their product pictures. Due to the way its designed you need to (un)tighten four relatively long bolts.
Once tightened you are constrained to a relatively small area of movement, so you need to make your sure your stencil openings already line up with the PCB quite well. If its off too much, the X/Y adjustment will not be enough to make sure they line up.

With the common 'put four PCBs around it and fix your stencil using tape' method, you have support on all sides of the PCB.
With the neoden, once your squegee applies pressure outside the PCB contour, the part on the PCB might lift and cause smearing.

Not saying its a bad product, I would buy it again for the volume im doing, but it has some downsides.
With some effort and a 3D printer the mounting can maybe be done better, so with support on all sides and faster (un)loading speed.
Have not taken the time to look into this DIY option yet.