Need Some Help

[LTH]

I'm posting pics of the problem I'm having hoping some of you S3D experts might give me a hand. I'm also including the factory file. Everything looks pretty good except on the middle bottom radius. I've tried to print this 3 times and get the same results. The pictures explain it better than I could ever in words. I'm printing with Raptor PLA at 240 C on the hotend and 60 C on the bed. Thx for any help you might have.

[blackbird2016]

240°C for PLA is most probably to hot.
No wonder that with an insane infill of 100% for your middle part it is just melting away.
Some 30% or 35% should be more than enough for that design.
Temperature for PLA around 210°-220°.

[wirlybird]

I print Raptor at 245 so the temp is most likely ok but it can print much cooler also.

I think you may have to much angle ("overhang") there. So, the print is moving laterally faster than it is going up and the layers don't have much to bond to,

You might try going to a lower layer height for that area so it builds horizontally a little slower. Also make sure the part cooling fan is on full and slow down the print also.

My guess anyway by looking at the picture

[LTH]

Thx Whirlybird for your suggestions. I'll definitely give them a try.

Blackbird Raptor PLA is not normal pla, it’s made to print at 245 so that’s the reason for the temp I’m printing at.

[blackbird2016]

Sorry guys for giving the wrong advice here.
I mistook those pictures for some melting away when watching with my mobile this morning.
This certainly is a overhang/less supports issue.

And still I feel 245° for PLA a fairly high temperture, at lest for my PLAs and my setup (silicone sock).
Could well be that this Raptor stuff needs higher temps.
Regarding the infill...
100% in my opinion is overkill.
Even with 50% or 60% this thing will be that sturdy that there is no cup in that world heavy enough.
One would rather tear out the fastening-screw from dash or wall before that holder breaks.

I wish happy printing and success...

[dkightley]

I'd suggest three things....all on process 2

Increase perimeters by 1
Make sure you have support all the way round..and use a dense top layer
Change the External fill pattern to Concentric

[wirlybird]

Sorry guys for giving the wrong advice here.
I mistook those pictures for some melting away when watching with my mobile this morning.
This certainly is a overhang/less supports issue.

And still I feel 245° for PLA a fairly high temperture, at lest for my PLAs and my setup (silicone sock).
Could well be that this Raptor stuff needs higher temps.
Regarding the infill...
100% in my opinion is overkill.
Even with 50% or 60% this thing will be that sturdy that there is no cup in that world heavy enough.
One would rather tear out the fastening-screw from dash or wall before that holder breaks.

I wish happy printing and success...

It's Makergeeks filament. They say to run their PLA's at 235 and it does actually print pretty good there. The Raptor says 245. I print it there and it makes a good print. I have printed their PLA's much lower also and it does ok.

It does seem to go against normal PLA temps though!

[greybeard]

The Temp 245º is fine. I print PLA at 240º to 245º - it's my default temp for PLA.

The problem is the overhang - less than ~45º will droop - the radius is nearly flat as it starts it curvature (image).

TIP's: Change it from a Radius to a Chamfer of 45º of greater.
Put a fan by the printer - direct air to the plastic just printed but not directly at the nozzle (this will cool plastic before it droops too much)
Use supports.

[blackbird2016]

The Temp 245º is fine. I print PLA at 240º to 245º - it's my default temp for PLA.
Use supports.

Hey guys.
I do not want to come off topic here, but honestly...
It is pretty ok if this works for your setup and the readings of the specific sensors of specific printers, things to be printed and stuff.
But to claim 240° normal and default for PLA could really mislead people.
I too have some high temp PLA here but it is rather about its glass transition temperature and not about the print temperature.
These are temperatures fairly ok for PETG and depending on the setup at the lower end for ABS.
I really would like to see a decent "Benchy" or a "Marvin" printed with standart "over the counter" PLA at 240° or even 245°.
No offence indented...

[LTH]

Sorry guys for giving the wrong advice here.
I mistook those pictures for some melting away when watching with my mobile this morning.
This certainly is a overhang/less supports issue.

And still I feel 245° for PLA a fairly high temperture, at lest for my PLAs and my setup (silicone sock).
Could well be that this Raptor stuff needs higher temps.
Regarding the infill...
100% in my opinion is overkill.
Even with 50% or 60% this thing will be that sturdy that there is no cup in that world heavy enough.
One would rather tear out the fastening-screw from dash or wall before that holder breaks.

I wish happy printing and success...

I agree that 100% is probably overkill but the mount goes on a motorcycle so I feel better with the extra infill. Thx for the suggestions.