Author Topic: Phrozen Sonic Mini 4k  (Read 15834 times)

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timwatson

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Re: Phrozen Sonic Mini 4k
« Reply #240 on: February 20, 2021, 07:07:00 PM »
0
Also @Chris333 if you use the gasket I made with the Nintendo switch screen you will need a new version. It creates a gap at the front of the lcd in its current state. That’s next.
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timwatson

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Re: Phrozen Sonic Mini 4k
« Reply #241 on: February 20, 2021, 08:39:46 PM »
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I may have spoken too soon. Just like the last iterations the more I print with it the more the lean comes back. I wish I could figure out that part. I may need to print a more solid arm and try again. The bright side is that it now prints vertically square on the build plate. Calibration cubes are next to try to print after I get this resin exposure time figured out.
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timwatson

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Re: Phrozen Sonic Mini 4k
« Reply #242 on: February 20, 2021, 10:43:35 PM »
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So the rail doesn't flex when pulling away from the FEP?

What type of resin is the head made of that it is so strong?


You jinxed it  :ashat: ! As I was printing the new arm on the SM4k the one I FDM printed cracked in half hard.
Sigh, now reprinting a new one. I forgot the one I was using awhile back was printed in a different orientation with the grain running longways.
« Last Edit: February 20, 2021, 10:45:27 PM by timwatson »
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Chris333

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Re: Phrozen Sonic Mini 4k
« Reply #243 on: February 20, 2021, 10:50:37 PM »
+1
Maybe print thru holes and insert metal rods.

JeffB

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Re: Phrozen Sonic Mini 4k
« Reply #244 on: February 21, 2021, 10:48:29 AM »
+1
I may have spoken too soon. Just like the last iterations the more I print with it the more the lean comes back. I wish I could figure out that part. I may need to print a more solid arm and try again. The bright side is that it now prints vertically square on the build plate. Calibration cubes are next to try to print after I get this resin exposure time figured out.

Or you could just install the laser cut aluminum brackets I sent you!   :P

Jeff

timwatson

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Re: Phrozen Sonic Mini 4k
« Reply #245 on: February 21, 2021, 12:26:15 PM »
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Maybe print thru holes and insert metal rods.


That might be another next step, we will see. I still feel good about this version but I need a more sturdy arm. I started the resin arm printing (with the cracking FDM arm) and I am using Anycubic green mixed with Elegoo ABS like and the print time was ~3 hours. I've never ever got a resin print to take that little time before. This was the whole build plate filled.

Or you could just install the laser cut aluminum brackets I sent you!   :P

Jeff


I can't actually, if I want to reuse the holes in the base already there (which I should strive to do) then the current back of the arm is too deep front to back. That was a sad realization.
Could you laser cut us a 1/4" aluminum base @JeffB . I could make the drawing. I'm so deep into this now I have to see it through.
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timwatson

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Re: Phrozen Sonic Mini 4k
« Reply #246 on: February 21, 2021, 12:36:57 PM »
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Or you could just install the laser cut aluminum brackets I sent you!   :P

Jeff


Maybe you've got a point here. Maybe I should have tried to use the current arm instead of making a new one. I just need to move the whole tower back 1.5mm somehow. Sigh.


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« Last Edit: February 21, 2021, 12:48:56 PM by timwatson »
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Chris333

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Re: Phrozen Sonic Mini 4k
« Reply #247 on: February 21, 2021, 05:14:25 PM »
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If it sticks out 1.5mm now you could deepen the notch by 1.5mm and the 2 notches on the build plate that locate on the bolts. This would give you a tiny bit better bite.

timwatson

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Re: Phrozen Sonic Mini 4k
« Reply #248 on: February 21, 2021, 05:57:45 PM »
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If it sticks out 1.5mm now you could deepen the notch by 1.5mm and the 2 notches on the build plate that locate on the bolts. This would give you a tiny bit better bite.


I'm not sure I follow. The last picture shows that I can't move the tower or the arm. The stepper rod can't bend.
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Chris333

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Re: Phrozen Sonic Mini 4k
« Reply #249 on: February 21, 2021, 07:11:41 PM »
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This notch where the head screws into, just move it back 1.5mm


timwatson

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Re: Phrozen Sonic Mini 4k
« Reply #250 on: February 21, 2021, 07:27:28 PM »
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This notch where the head screws into, just move it back 1.5mm




Ah I see what you're saying, but that's not the problem, the 2 parts that can't move are the stepper and lead screw and the z axis tower placement. Those two things placed where they are won't allow the old bracket to be used.
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Chris333

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Re: Phrozen Sonic Mini 4k
« Reply #251 on: February 21, 2021, 07:39:12 PM »
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Oh I see it now the back vertical part will not fit. Carry on  :lol:

Chris333

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Re: Phrozen Sonic Mini 4k
« Reply #252 on: February 22, 2021, 03:12:46 PM »
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Got my 1/4" aluminum plate today. Seems cutting it will be fun. I could spend hours clamping it down to my mill or just try cutting it on the table saw.  :|

Chris333

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Re: Phrozen Sonic Mini 4k
« Reply #253 on: February 22, 2021, 05:06:50 PM »
+1
Well that wasn't bad at all. Bought a billion tooth blade for the saw and it cut right through. Only downside... metallic sawdust. This will be inside the machine and never seen.



No holes drilled yet.

timwatson

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Re: Phrozen Sonic Mini 4k
« Reply #254 on: February 22, 2021, 05:14:30 PM »
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That’s a thing of beauty @Chris333 ! Really I might be coming around to this. Where did you get the metal? Also is it 6061? Also how did you drill mill the hole for the end stop sensor.
Tim Watson
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Technology, new ideas and model railroading.