Phrozen High-Resolution RPG Resin

[Jesse6669]

Has anyone tried this yet?  I have(had) been using an 80-20 mix of Phrozen Aqua Grey 8K / Onyx Impact Plus which yielded a tough/flexible yet high-resolution print. 
This new(er) resin would seem to fit the bill (I find flexibility is the key, but don't want warpage). 

[JeffB]

Has anyone tried this yet?  I have(had) been using an 80-20 mix of Phrozen Aqua Grey 8K / Onyx Impact Plus which yielded a tough/flexible yet high-resolution print. 
This new(er) resin would seem to fit the bill (I find flexibility is the key, but don't want warpage).

I have not tried this yet, but I just tried an 80-20 mix of Siraya Tech Fast Grey and Phrozen Onyx Impact Plus per your suggestion...

Worked GREAT!!!!  I've been printing door hardware and stirrup steps for S scale narrow gauge freight cars and when using Siraya Tech Fast Grey 100%, the parts are a tad too brittle (keep in mind I'm printing them in 0.25-0.3mm cross sections).

Took three tries to dial in the exposure settings, but once I got something that worked, the parts are much much less brittle. 

It's good that the 80-20 blend works well enough...  At $110 per liter, I wouldn't want to be using it straight up for a lot of printing!

Jeff

[Jesse6669]

Jeff, I was very happy with that blend as well.  OTOH I have been printing the new Z gondola and trucks with the Phrozen RPG resin and I think it works just as well.  It's nice to not have the hassle of blending..

[JeffB]

Jeff, I was very happy with that blend as well.  OTOH I have been printing the new Z gondola and trucks with the Phrozen RPG resin and I think it works just as well.  It's nice to not have the hassle of blending..

I'll have to give that a look...  I purchased some Siraya Tech "Build" resin recently.  It was recommended somewhere for increased impact resistance/lower brittleness.  And it's about $30/Liter instead of $110.

One thing I don't like about the blend, is that for whatever reason, my parts are coming out thicker in the vertical axis (Z) than with something like the Siraya Tech Fast Grey resin.  With the Fast Grey, they're printing at the designed thickness.  With the blend, they're about 0.2-0.25mm thicker than designed.  And that's after doing a bunch of testing to try to find the optimal exposure time.  I settled on 8sec exposure for normal layers.  Any less, and the supports are too weak.  Longer exposures result in slightly thicker cross sections all around.

The blend does tap real nice though...  I usually form tap everything using threaded rods (I use 1mm and 1.2mm screws and tapping with a standard tap is too fussy).  The blend doesn't split thin in cross sections during form tapping, something that the Fast resin will do if I'm not careful.

The blend works great for things like stirrup steps though...  Much less brittle and impact resistant, which if that's all I ever use this blend for, so be it.

Jeff

[Sokramiketes]

8 secs a layer seems high.  Is your screen old?  Is your film still clear?

[JeffB]

8 secs a layer seems high.  Is your screen old?  Is your film still clear?

Screen is relatively new.  Film is a few days old. 

Tried lower exposure times and the supports (I use very small contact points- 0.2-0.35mm) failed.  It might be the Siraya I mixed with the Onyx.  Even though it was a new to me bottle (Amazon), it had a sell by date on the label of Feb 2024.  I'm not convinced that's the problem though.  I've been using resin from that bottle straight up for the last day and it's been fine. 

I normally use exposure times between 2sec and 3.6sec for the pure Siraya Tech Fast Grey.  Depends mostly on the what I'm printing. 

If you go on Phrozen's site and look at the recommended exposure times for Onyx, they're really high.  Off the top of my head, 32sec bottom layer and somewhere around 20sec for all others, but I could be mis-remembering.

I will re-try a shorter exposure the next time I have the mix in the vat...  Back to printing small parts using the Siraya Fast Grey for the time being.  That stuff is great BTW!

Phenomenal detail...  I can't say enough good things about the Phrozen Sonic Mini 8K either.  The level of detail I'm able to get is crazy.  I've 3D printed models with raised lettering (a Caterpillar D11000 radiator) that's less than 0.2mm high and 0.15mm across and it prints perfectly!  Same with 0.15mm diameter "rivets", sure under magnification they're rough, but to the naked eye and even close up pictures, they look pretty good...

Anyway...

Jeff

[Jesse6669]

Here are the settings that I was using with my T-scale stuff.   

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[JeffB]

Thanks Jesse...

I'll give those settings a shot the next time I have the blend in the vat.

Jeff