Swiffi
March 16, 2017, 6:50pm
1
Just got finished printing my first benchy, I printed 4 other things before this and they all turned out great! I was just wondering what you guys thought about my benchy and if I should change anything for a better print.
I am using a monoprice maker select v2 with pla filament. I use cura 2.4.
Looks pretty good.
Bed might be a bit hot so maybe could drop the temp a bit after the first layer or two but depending on the temps.
Might be over extruding just a little.
What temps and speeds?
Swiffi
March 16, 2017, 9:03pm
3
The nozzle temp is usually 205 and the bed is 60. I am not 100% sure of the speed since I just use the recommended settings in cura.
stngrz
March 16, 2017, 10:46pm
4
Looks like you’re printing up to your printers capacity, it looks good!. Are you using a skirt? the edges look a bit(like not really tho) ruff around the bottom, you can print the skirt one layer away just to be sure you’re extruding then start the print, however if im having trouble with a print sticking ill attach my skirt to the print and add a few loops.
and like they’re saying you might be over extruding, a little.
I would measure the diameter of the filament also, it will vary slightly spool to spool and cause over/under extrusion as you change filaments.
Another way to check extrusion (slicer vs printer(stepper steps actually)) is to measure out a certain amount of filament, say 50mm. Use pronterface or another tool like that to manually extrude 30mm filament. If the steps per mm is off you will have some number other than 20mm left over. do some math and change your extrusion multiplier to adjust for the difference.
you can even change the firmware on the printer if you’re up to it.
keep it up!
Swiffi
March 16, 2017, 11:00pm
5
By Skirt do you mean Building Plate Adhesion? I use cura and thats what they call it. I do use it then. I think the edge that you are talking about is part of the skirt i wasn’t able to get off. I have a lot of trouble getting the prints off of the bed because they are stuck on so well. So the opposite of you!
I am not really sure how to fix the over extrusion since I just got it. But I’ll look into it.
stngrz
March 16, 2017, 11:25pm
6
theres a bunch of things to get familiar with and learn as you complete more prints. I would suggest having another slicer on hand (a program like cura) since not all .stl or .obj will be process or slice to desired equally. i have been using Slic3r recently and am using it over cura at the moment.
I print straight onto glass with not extras adhesive, it seems cleaner over all, imo. no weird scrapes on the bed sticker and its easy to clean (IF adhesive is needed).
if memory serves correctly you generally have 3-ish types of methods for bed adhesion.
1. raft - it will use extra filament to create a little raft the print will build on, but as long as it stick to the bed the print will come out great.
2. Brim - a solid amount of filament that is printed under the object and adheres as if another layer.
3 skirt - making some loops around the print ensuring the filament is sticking and flowing. you can place it touching the object if needed or place it a few loops out.
-ish - print directly onto the bed with not extras.
A brim doesn’t add any material “under” the model only a raft does. The brim is a skirt with a zero clearance to the models edges.
Temps are good to start. Might drop the extruder a little. 5 at a time. I would not use the “Brim”. Use a “Skirt” even though they are almost the same thing. The Brim is a skirt that touches the edges of the model to give more surface area for adhesion to the bed. If your models are sticking good then don’t bother with it.
Use a skirt to let the extruder make a few passes around and close to the model to get the juices flowing before it starts the model. Make sure you have the material cooling fan running after the first layer. This will help with PLA.
Find the speed settings and see about slowing down. Maybe an overall speed of 2000mm/min or 30-35mm/sec.
If you have troubles with prints slowing down can be a good start.
Benchy is a notoriously difficult print, but you are getting there. Try much smaller layer heights to see how well you can do it, but this is a pretty good benchy print for your 5th print.
