Has anyone had an issue where they print (I'm using the flashforge creator pro) without a raft just fine? Then suddenly they require it... the ABS won't stick to the bed at all?.... I've been using Simplify3d from the beginning as well. Played with the setting to get a raft that supposedly comes off easier.. temps etc.. I removed the original sheet that came on the bed of the flashforge, started using a glass bed and now came back to the original bed with a replacement blue Flashforge sheet on the bed. I've also replaced the nozzle with an all metal setup.
It prints great with a raft.. although I THINK the rods may be warping since it seems that while calibrating the bed the center is just a hair tighter after adjusting the screws.. Anyway, when I print with a raft and skirt/brim the ABS sticks (the VERY FIRST LAYER) without issue.. IF I DON'T use a raft (using the exact same ABS profile except with the RAFT box unchecked but the skirt/brim SELECTED) the ABS will not stick to the bed.. it looks like it trails a thin spiderweb.. It looks NOTHING like when it lays down the Skirt/Brim with the Raft option turned on.. So confused......
Re: Rafts suddenly a REQUIREMENT to print
I think leveling is your issue and you are probably to close to the bed.
First, only change one thing at a time.
When leveling only level with the nozzle you are going to use directly over the leveling screw. Anywhere else is irrelevant. These printers all tend to sag a tiny bit when the gantry is in the center. Usually it doesn't make a difference.
Clean the glass well. Use Aqua Net hair spray or glue stick applied to a cold bed.
Start with the bed at 110 then drop after the first layer. You can drop more on smaller prints. 230 for the extruder for most ABS.
Use a skirt with a couple perimeters to let the extrusion get going before it starts the first layer.
You should only need to use a raft under very certain circumstances.
First, only change one thing at a time.
When leveling only level with the nozzle you are going to use directly over the leveling screw. Anywhere else is irrelevant. These printers all tend to sag a tiny bit when the gantry is in the center. Usually it doesn't make a difference.
Clean the glass well. Use Aqua Net hair spray or glue stick applied to a cold bed.
Start with the bed at 110 then drop after the first layer. You can drop more on smaller prints. 230 for the extruder for most ABS.
Use a skirt with a couple perimeters to let the extrusion get going before it starts the first layer.
You should only need to use a raft under very certain circumstances.
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mthompson239
- Posts: 84
- Joined: Wed Mar 16, 2016 6:19 pm
Re: Rafts suddenly a REQUIREMENT to print
I use PEI on glass and never use rafts for ABS or other materials.
Re: Rafts suddenly a REQUIREMENT to print
I use PEi on glass also for a few of my printers. Once you get it figured out it is great. Just takes a little work to figure out what it likes then off to the races!
