Speed / Flow ??

[jsnbrgg]

Hello,

I'm pretty new to 3D Printing and I completed my Rostock Max v2 build last night. So far I've printed the 2 fan mounts that the assembly manual tell me to print, and now I'm currently printing a phone mount for my car. I'm using the MatterControl software and the default settings config file that I downloaded from the SeeMeCNC website for my printer.

So I have a question about the Speed and Flow settings. They are currently running at 100%. If I raise them on either the printer or in the MatterControl software Control Tab do I need to raise them both to try and print faster, or just one? Or if I raise them both do I need to raise them both by the same amount? What would you consider a max percentage that is safe to play up to?

Thanks,
J

[Nylocke]

Never much with the flow rate, if you're having issues with too little/too much extrusion you have another problem to solve, and the screwing with the flow rate will not truly fix it.

If you want to speed up the print you *can* adjust the speed multiplier on the printer itself, but if I were you I'd just play with the speed settings in MatterSlice or whatever you're using for slicing, likely just multiplying them will result in a wonky untuned result. Generally the only time I mess directly with the speed multiplier is when I'm making a bracelet or single walled vase and my min layer time is slowing things way down.

[KAS]

Adjusting those rates are usually for small adjustments while the print is already running.

To set the overall speed you should adjust the different speed settings in MatterControl before you compile the gcode.

Inside, Outside, and Infill are the main ones to adjust.

[jsnbrgg]

Thanks! I'll stick to keeping my speed adjustments in the slicer settings.

[jlmccuan]

Using the Speed Multiplier is a good way to experiment and look at what increasing or decreasing your speed in the slicer settings would do. Increasing the speed adjusts the speed of travel and the calculations on flow are adjusted as well to match the new speed. Increasing or decreasing the flow is for over or under extrusion adjustments. Both adjustments allow you to change conditions on the fly rather than editing your settings and starting new prints for every change.

[jsnbrgg]

Using the Speed Multiplier is a good way to experiment and look at what increasing or decreasing your speed in the slicer settings would do. Increasing the speed adjusts the speed of travel and the calculations on flow are adjusted as well to match the new speed. Increasing or decreasing the flow is for over or under extrusion adjustments. Both adjustments allow you to change conditions on the fly rather than editing your settings and starting new prints for every change.

Very useful information! Thanks!

[Dale Eason]

I think no one answered one of your questions. Which point of control to use. That is either matter control real time or the printer settings can be used to adjust the settings if so desired. Or if you do both then the printer setting is also applied to the matter control real time settings values.

Like others have said they mostly are used to experiment with to come up with the settings to be used for the slicer when it is slicing the model.

I have used the printer itself to speed up the printing after the print has made it through the difficult parts. I have also slowed it down manually when I knew it was about to hit parts of the print that worked best at slower speeds like bridging that the slicer did not recognize as such (layers over low percentage infill.)

Dale