46
votes
Accepted
What are main differences between rafts, skirts and brims?
Rafts:
Rafts are a few layers of plastic a placed on the printing surface before the object is printed. If non water dissoluble filament is used, a bit of an air gap will be placed between the raft ...
- 2,248
11
votes
Accepted
When should I use a raft, when should I use a brim?
A raft will allow for better adhesion for the whole print as the raft attaches to the printing surface and the print attaches to the raft. Rafts go all the way under the print and consist of multiple ...
- 2,248
10
votes
Accepted
How to easily get rid of rafts and support structures?
The best way to get rid of them is to change the design of the printed object to make them unnecessary.
Instead of printing the one part with support material, the piece can be split into two or more ...
8
votes
When should I use a raft, when should I use a brim?
A raft is used to prevent warping. Instead of printing directly on the build surface, parts are built on top of it. You remove and dispose of a raft post-print. The raft is larger than the part and so ...
- 181
8
votes
What are main differences between rafts, skirts and brims?
All three of these features are used to improve the quality and success rate of prints, especially those failing due to issues on the first few layers, or due to the small size of the first layer.
...
- 852
7
votes
Accepted
Raft hard to remove?
A couple things to consider:
Ensure that your build plate is flat and level. An un-parallel HBP could result in the object "welding" to the raft.
Turn down your nozzle temperature. It is likely that ...
- 6,274
6
votes
Accepted
Getting a Cura Raft to stick to the object more firmly (for ABS)
You should reduce the air gap option called "Raft Air Gap". Printing ABS optimally requires an enclosure of the printer, wind and draft cause temperature changes which could lead to layer separation.
- 33.7k
5
votes
Accepted
What exactly does automatic bed leveling do?
Last first: use of a raft has nothing to do with bed levelling. It depends only on the features/shape/etc of the object being printed.
Now, as to what the auto-levelling does: the answer is, sadly "...
- 3,028
5
votes
What exactly does automatic bed leveling do?
Basically there are two problems to address: first - bed inclination and second - uneven bed surface.
There are different algorithms dealing with one or both problems.
Most specialists insist that ...
- 474
5
votes
Setting up a brim/raft for only a portion of the overall print
In the newest version of Cura (4.5.0), in the per model settings, the only thing you can change for options set Build Plate Adhesion is ...
5
votes
How to easily get rid of rafts and support structures?
Increasing the distance between the support/raft and the print should allow for easier removal. Some slicers (such as Slic3r) have settings for 0.0 mm spacing for water dissoluble supports, and 0.2 ...
- 2,248
5
votes
When should I use a raft, when should I use a brim?
A raft helps when the part has few points of contact with the print bed, and doesn't therefore adhere well at points within and without the part.
A brim helps when the part doesn't adhere well around ...
- 1,843
4
votes
How to easily get rid of rafts and support structures?
I use diagonal cutters and a pair of mini pliers.
I print with Simplify3d and the support structures are remarkably easy to remove, I find giving a quick pull pops most off. The diagonal cutters get ...
- 421
4
votes
Accepted
Lines of PLA not sticking to the bed
You got a few things happening. First that temp seems low. I am printing PLA at 215.. but there are a lot of factors. Start with a simple calibration thin wall test. Which is just a wall, no body.
...
- 3,043
4
votes
What tweaks do slicers use to get rafts to stick?
You could experiment with the 'cleaning' part of the startup gcode shown here
...
- 3,732
4
votes
Accepted
Setting up a brim/raft for only a portion of the overall print
This is a "No" and "Yes" answer, it depends on the version of Cura you are using!
No, there are no options available to set the brim to some of the parts in Ultimaker Cura (at the ...
- 33.7k
4
votes
What exactly does automatic bed leveling do?
A probe or even manual (e.g. through LCD panel) leveling results in either a reference plane or mesh. This depends on the firmware and the options set in the firmware. Basically, this process maps the ...
- 33.7k
4
votes
Accepted
Why did my print fall off its raft?
Your trouble lies within the presliced G-code: the temperatures are rather low for PLA and upping both by 10 degrees would be advisable:
200 °C for the Hotend
60 °C for the Bed
Atop that, printing a ...
- 20.7k
3
votes
How should I go about printing easily removable rafts?
As comments suggest, a raft is not all that popular. Consider using a brim/skirt instead. I've had excellent luck with a 4-mm skirt, printing onto blue painter's tape. (Unless you consider it bad ...
- 3,028
3
votes
Why did my print fall off its raft?
It looks to me as the model did not have enough surface contact with the raft.
This can be caused by to big of a gap between raft and model set in the slicer or because of Underextrusion.
The part ...
- 131
2
votes
Raft hard to remove?
You could try reducing the temperature of the hotend. If you are using too high of a temperature, the ABS will "run" and over-adhere to the raft.
What slicer are you using? I have found that raft ...
- 71
2
votes
Accepted
When to use Wave Bonding vs Raft on a 3D print?
After additional research, it seems that using both at the same time is ill-advised (more like pointless).
Wave bonding is best suited for larger prints, primarily to prevent warping of the initial ...
2
votes
What tweaks do slicers use to get rafts to stick?
While using rafts with PLA is a good idea due to warping, PETG is a material that requires very little build plate adhesion.
When I printed with PLA, I would normally use a two layer raft with a 0.3&...
2
votes
What tweaks do slicers use to get rafts to stick?
When I started work on mine, the bed leveling and radius (Delta-only issue) were horrid, and my erstwhile assistant was fond of using a LOT of glue stick, which sort-of made things work, though in ...
- 723
2
votes
Accepted
Raft warping (Makerbot Replicator+)
I'm not sure I am reading your post correctly, but if you are doing a batch of small prints, I would recommend to space them enough so as each of them has its own mini-raft, rather than all of them ...
- 4,627
2
votes
Accepted
How should I go about printing easily removable rafts?
I have been able to get rafts that peel off by editing the g-code after the raft has finished and adding an M104 set temperature command telling my printer to cool the nozzle down to about 40 degrees ...
- 636
2
votes
Lines of PLA not sticking to the bed
Do things in this order
1) Make sure your bed surface is appropriate. (PET tape, or elmers glue on glass. must be applied every 3 to 4 prints in used area)
2)Make sure extruder temperature is not ...
- 319
2
votes
Accepted
Ender 3 first layer of ESD PLA printing on raft fails
The gap between the raft and the first layer is too large (you need to switch to expert mode in Ultimaker Cura to see the values of the option before you can change them) and the hotend is too hot (...
- 33.7k
2
votes
Why does a raft adhere to the bed while skirt does not?
The raft base (initial layer) is usually printed with very wide lines. Cura's default is double the nozzle diameter, so 0.8 mm with standard 0.4 mm nozzle. This is ridiculously high flow, especially ...
2
votes
My Hatchbox PLA filament only allows me to use rafts
It is unlikely this is a filament material issue since many of us have used Hatchbox PLA without this issue. This is a first layer adhesion issue.
Your bed may not be clean, or the bed may have had ...
- 2,218
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