I was printing fine and was looking at something on Marker and clicked download into Bambu Slicer and it changed some settings and now when I print with supports it changes parts of the print to supports or prints hollow. These printed fine before. Pictures show the same piece printed before and after. The before one I can try to break and it very solid. Now just peels apart at a touch.
Why are you changing some of the default support settings? Just curious.
I am using pla support with printed Petg and followed in believe the bambu wikki and was working great. Supports peeled right off.
Check to see if your flushing volumes have changed. Any residual will cause the issues you are seeing.
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i had then up to 800 will see if they got reset. If possible can you explain why this would matter on an H2D? If i understand this is to make sure the nozzle is flushed of pla so not to mix with petg, but if I am using the pla on one nozzle and pteg on other how would this help?
I didn’t realize you were printing with an H2D.
No problem guess I have been flushing extra filament anyway since I changed to 800 
Do you keep downloading the same file ?? , ive had this happen with a file ive downloaded more than once , or did you make the changes ?
When all else fails, reset and try again.
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An edited tag might come in handy on makerworld prints/models
It looks to me as if the temperatures are not right. PETG is normally printed at a higher temperature than PLA. Since the H2D has a large thermal mass, it will take some time to reach the temperature. This time can cause problems.
My experience is to use the same temperature for both materials.
PLA at 230°C and PETG at 230°C.
I was going to day the same thing…this looms like a pervasive temperature issue with it not heating up to the full temp for petg for all of the petg print.
Fortunately most of the garbage I’m seeing right now is on the prime tower, but Bambu Studio said it wanted to apply some new config for the H2D. Since doing that, it seems like every time it switches to the right nozzle, the filament starts flowing before getting to the prime tower. Looks crazy now.
So I reset to defaults and got the original file off a backup drive. It did improve a little but still snaps apart. I have two pictures of one that was printed a week ago. I had to use clippers and a wedge to get apart and still stuck together. One printed last night just snaps apart. Really would appreciate any other suggestions.
Have you tried a known dry filament? Both the before and after pics do not look very good. I would suspect moisture
The filament has been in the AMS Pro for over three weeks. The older print the bottom was my fault laid it wrong on the plate. Reprinted standing and looks great so used that one to cut up to see inside.
Strong supports ? probably not the best for small objects , how do you have it orientated on the plate ? 3rd picture facing up , down ?
No the supports work good. I mean the print itself was saw strong I could not break it had to use tools and now same print just falls apart
The 3rd picture is mainly a support issue
The second is a force issue, It doesnt appear to of just fell apart (filament colouration)
The fist picture looks kind of ok