Simplify3D User Forum

I would like to see the Skirt print the same speed as the first layer. The purpose of the skirt is to prime the heads before it start the job. Right now it is moving way too fast to be any help.

Slic3r prints anything on the first layer at a slow speed.

Also I would like the first layer to accept a percentage as well as a hard value. Same as First layer height. Once I get my first layer dialed in, I don't want it adjusting itself for other speeds or layers...



Thanks

Jeff

I just tried printing a skirt with my first layer speed set to 50% and 25%. The skirt speed was correctly halved when moving from 50 to 25%. So I guess I'm not seeing the same thing you are.

You should be able to find the F-parameter for the skirt speed pretty easily in your gcode file. It's the first thing after the "layer 1" tag.

It looks like it is running at "infill" speeds and not at perimeter speeds. I will have to slow it down even more for the skirt.. having the skirt run on perimeter speed would be better. Nice and slow and even. But I see what is going on now.

Jeff

I feel that the ENTIRE first layer needs to be one speed. Everything, Skirt, Infill, perimeter, loops, ect... I have prints (firstlayer) that come out way better using Slic3r when the first layer is all at one speed.

This is my vote. Anyone else.

Other than that your software is awesome. Love it. Keep it up...

Thanks

Jeff

jeff, I agree. I just emailed support.

Hello!

I am very impressed by Simplify3D so far, but I am having problems tuning the skirt speed.

It is way too fast no matter what I do and this threatens the adhesion. I have to watch the first layer and manually remove the first laps of the skirt since they do not adhere well enough and is dragged around.

Why is the first layer speed a percentage? It really should have no relation to whatever speed the following layers are printed at. A certain build surface with a fixed temperature and optional adhesion enhancer requires a fixed speed. Increasing the nominal print speed of higher layers doesn't make the bed grow better adhesion.

korpx wrote:jeff, I agree. I just emailed support.

Hello!

I am very impressed by Simplify3D so far, but I am having problems tuning the skirt speed.

It is way too fast no matter what I do and this threatens the adhesion. I have to watch the first layer and manually remove the first laps of the skirt since they do not adhere well enough and is dragged around.

Why is the first layer speed a percentage? It really should have no relation to whatever speed the following layers are printed at. A certain build surface with a fixed temperature and optional adhesion enhancer requires a fixed speed. Increasing the nominal print speed of higher layers doesn't make the bed grow better adhesion.

This is still a problem. Did you ever get a response from Simplify team?

I also was having trouble determining what settings would impact the skirt speed.

Using the current 2.2 S3D software, I narrowed it down to the Cooling tab, Speed Overrides. With the "Adjust printing speed for layers below... secs." checked, the skirt/brim speed was determined by the "Allow speed reductions down to xx%". This made no sense to me as my first layer was well over the 15 sec threshold I had input. Also, changing the first layer speed had no affect on the skirt or brim.

Has anyone else seen this behavior? Maybe my settings were unique to produce this behavior.

I can upload a factory file if someone is interested in reproducing this oddity.

Thanks!
- TM

Nope, they mailed me a pretty generic reply with suggestions on how to improve first layer adhesion.
It seems they pay little attention to the forum.

You could always just do two processes, one for the first layer and one for everything else. That way you could set the first layer speed to whatever you wanted to. Keep the skirt at 100% and set the speed for the entire layer to slow.

korpx wrote:Nope, they mailed me a pretty generic reply with suggestions on how to improve first layer adhesion.
It seems they pay little attention to the forum.

Not really what we want

korpx wrote:You could always just do two processes, one for the first layer and one for everything else. That way you could set the first layer speed to whatever you wanted to. Keep the skirt at 100% and set the speed for the entire layer to slow.

Normally that would work just fine, but not when we print a tall skirt for cooling part.