[T] Replace cleaning roller with silverpaste extruder

A project log for SecSavr Suspense [gd0105]

The best of resin with the best of filament; is such a 3D printer possible?

kelvinAkelvinA 08/17/2022 at 22:180 Comments

At the modelling rate I'm going at, and with other projects I still have to tend to, it's not looking like I'd be able to receive parts and start building until the second half of September, so I'm slightly sadly scrolling through Youtube, seeing what could be printable with the Suspense. I actually wanted to have a design ready and start ordering parts on Aug 1, so I'm at least 3 weeks behind that goal.

I'm noticing that there's a few things that could use some integrated conductive traces.

With the supreme conductivity of silver paste and my research suggesting that its use would be affordable, I'm thinking that coils could be back on the menu. 

With things like the PnP wheel (video below), and the fact that products from Voltera and Nano Dimension exist without PnP functionality, it seems that 0 to being able to 3D print PCBs is a more valuable jump than 3DPCB's to auto populated 3DPCBs. 

The roller assembly is no longer needed, but that really just leaves a void of space that could be better utilised with the silver paste extruder. I'm also thinking that it would be possible to fit the fibre applicator on there too instead of on a scara-like arm. 

The first benefit is that conductive and fibre paths can be placed in the print up to around the build height back when I was using a roller. The second one is that I'm much more likely to be able to pull of 120 or even 80um silver tracks with a cartesian motion system as no angles are involved in positioning. 

Then there's the fact that it's more space efficient, meaning that the SecSavr SuspenseSmall could have this installed. Additionally, moving the fibre tool onto the gantry would increase the amount of space for the PnP tool if it ever comes to fruition. 

Speaking of which, it should still be possible to implement my magnet stacking reusable supports with the degaussing electromagnets I was going to use in #SecSavr Sublime [gd0036], and I'd like to see if it's possible to implement placing SMD resistors and capacitors since they're symmetrical in 2 spacial planes. It would use the same motor as the fibre tool.

The kinematics to be used is CoreXY. Hopefully I can fit all that and the unsupported MGN9 rail in a 60x102mm footprint, but it's probably going to be twice as long. Oh and I might add a screen on the front for some visual flair. I'm thinking that this is going to add around £50+ back onto the BOM, but I think it's well worth it.