Ironing

A place where discussions are about 3D printing.
Post Reply
User avatar
ge_rik
Administrator
Administrator
Posts: 6497
Joined: Sun Oct 25, 2009 10:20 pm
Location: Cheshire
Contact:

Ironing

Post by ge_rik » Thu Dec 10, 2020 9:41 am

I've been paying about with the ironing settings in Cura and I'm starting to see some improvements. This is a pair of open wagon sides straight off the printer.
IMG_1293.JPG
IMG_1293.JPG (39.97 KiB) Viewed 2438 times
.
I think I'll need to increase the top layer by maybe 0.2mm and, despite using Z-hop I'm still getting some stringing when the head travels. But overall, I'm quite pleased with the outcome.

Rik
------------------------
Peckforton Light Railway - Blog Facebook Youtube

User avatar
philipy
Moderator
Moderator
Posts: 5033
Joined: Sun Jan 30, 2011 3:00 pm
Location: South Northants

Re: Ironing

Post by philipy » Thu Dec 10, 2020 9:50 am

That is looking very good Rik.
When I had problems with pillowing, and you seems to have a hint of it, I was advised to increase the top layer count up to as much as 10 layers and it certainly helped, - that also depends on the % infill, the lower the % the more top layers it needs.
Philip

User avatar
ge_rik
Administrator
Administrator
Posts: 6497
Joined: Sun Oct 25, 2009 10:20 pm
Location: Cheshire
Contact:

Re: Ironing

Post by ge_rik » Thu Dec 10, 2020 10:32 am

philipy wrote: ↑Thu Dec 10, 2020 9:50 am That is looking very good Rik.
When I had problems with pillowing, and you seems to have a hint of it, I was advised to increase the top layer count up to as much as 10 layers and it certainly helped, - that also depends on the % infill, the lower the % the more top layers it needs.
Does the bottom layer also need to be increased in line with the top? In Cura it seems to recommend keeping them the same.

Rik
------------------------
Peckforton Light Railway - Blog Facebook Youtube

User avatar
philipy
Moderator
Moderator
Posts: 5033
Joined: Sun Jan 30, 2011 3:00 pm
Location: South Northants

Re: Ironing

Post by philipy » Thu Dec 10, 2020 11:11 am

ge_rik wrote: ↑Thu Dec 10, 2020 10:32 am
Does the bottom layer also need to be increased in line with the top? In Cura it seems to recommend keeping them the same.
Not sure to be honest. In my early printing days I was using the default settings which I think was 3 top and bottom with 15% infill. When I did an underframe with buffer beams it had massive pillowing on the top of the bufferbeams. I was using Rigidink filament at the time and their tech support was pretty good, so I asked what to do about it and that was their response, increase the top layers to as much as 10 depending on infill %. The reason for the pillowing is that the sidewalls/infill trap air and if the spaces are too large to adequately support the first top layers they try to sag, but if the heat of that layer actually warms the air underneath it creates pressure which forces the layer up in the centre of the space instead. The few subsequent layers just reinforce it to a point where it can no longer flex and then subsequent to that it all sags back because the air cools down. I hope that makes sense, it's difficult to explain, but the point is that at the bottom nothing can move as part of this process because it's all constrained anyway, so I don't think there is any need to play with the bottom. I guess that if the vertical height is fairly small and there are any steps near the bottom it might be an issue, in theory at least
Philip

User avatar
FWLR
Driver
Driver
Posts: 4262
Joined: Sat Aug 05, 2017 9:45 am
Location: Preston, Lancashire, UK

Re: Ironing

Post by FWLR » Thu Jan 07, 2021 8:52 am

Hi Rik, is this the side for your wagon in the 3d print files.

User avatar
ge_rik
Administrator
Administrator
Posts: 6497
Joined: Sun Oct 25, 2009 10:20 pm
Location: Cheshire
Contact:

Re: Ironing

Post by ge_rik » Thu Jan 07, 2021 4:20 pm

FWLR wrote: ↑Thu Jan 07, 2021 8:52 am Hi Rik, is this the side for your wagon in the 3d print files.
Yes. The four-plank open
Rik
------------------------
Peckforton Light Railway - Blog Facebook Youtube

User avatar
FWLR
Driver
Driver
Posts: 4262
Joined: Sat Aug 05, 2017 9:45 am
Location: Preston, Lancashire, UK

Re: Ironing

Post by FWLR » Fri Jan 08, 2021 9:07 am

Thanks Rik. :thumbright: :thumbright:

I will have a go at printing them later...

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest