Support xy distance
The wall thickness of my model is 2mm. Which xy distance should I choose for the support? I'm printing petg-cf. With 0,35mm the support is too close. I read 75% is good, this would be 1,5mm. Is this worth a try or is this too far?
RE: Support xy distance
This really belongs in the prusa slicer section but which specific setting are you asking about ?
"XY separation between an object and its support" or the "top contact distance" ?
I will assume XY separation between an object and its support as that is often defined as a percentage. The distance has zero to do with your model and how thick the models walls are. It is defined as either an absolute distance in mm or when defined as a percentage is based on your defined Extrusion Width. So if your extrusion with was 0.45mm (common value for a 0.4mm nozzle) and it was set to 100% then it would place support 0.45mm away from your objects perimeters.
If you printer is not as precise or you are printing high speed and so might be getting a bit more ringing then its generally a good idea to increase the xy separation a bit. I generally have it set at 80% but I also use 100-120% for higher speeds on my Max3 which I find needs more than my Mk3.
RE: Support xy distance
A 75% support distance, or 1.5mm, sounds like a good starting point. It’s worth trying to see if it balances effective support with ease of removal.
RE: Support xy distance
This really belongs in the prusa slicer section but which specific setting are you asking about ?
"XY separation between an object and its support" or the "top contact distance" ?I will assume XY separation between an object and its support as that is often defined as a percentage. The distance has zero to do with your model and how thick the models walls are. It is defined as either an absolute distance in mm or when defined as a percentage is based on your defined Extrusion Width. So if your extrusion with was 0.45mm (common value for a 0.4mm nozzle) and it was set to 100% then it would place support 0.45mm away from your objects perimeters.
If you printer is not as precise or you are printing high speed and so might be getting a bit more ringing then its generally a good idea to increase the xy separation a bit. I generally have it set at 80% but I also use 100-120% for higher speeds on my Max3 which I find needs more than my Mk3.
Yes it's the xy separation between an object and it's support:
xy-separation-between-an-object-and-its-support
Here is explained: "If expressed as a percentage (for example 150%) it will be calculated over the external perimeter width."
The perimeter as I understood are the amount of outlines of the outer wall, so for me this is the wall thickness:
That's how I calculated the 1.5mm. From your calculation it would be for a line width of 0.4mm and 75% the value of 0.35mm.
1.5mm to 0.35mm that's a great difference that's why I'm asking.
RE: Support xy distance
Your understanding is incorrect. Its based on a percentage of the external perimeter extrusion width - AS DEFINED in your slicer settings. Under Print Settings>Advanced>Extrusion Width>External Perimeters as previously mentioned.
It does not matter if your object geometry has a wall thickness of 2mm or 200mm. PS doesn't care. Objects are sliced with however many Perimeters you set, but those are made of of an External Perimeter and 0 to n perimeters to make up your desired count (if the slicer can fit them into the allowed geometry). If your geometry is really thin then you will only get 1 even of you set 10. Or less. If your geo is too thin then you wont get any perimeters and you will get gaps in the slice output.
RE: Support xy distance
I see, then I will try 120% based on 0.4mm line width. Thx