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Feb 2016

So, I printed the 20 x 20 cube out last night. Right extruder was at 205. Bed was at 60 for layer 1. 1st layer was at 90% height and a speed of 45 %. Did a fast honeycomb infill 10% Cube actually stayed put and completed! 1 win! The first layer was a little a little bumpy, meaning I could feel the lines in it. Setting was Medium so kind of expect it. One of the and a partial side seems to curve in slightly. and the entire 1st row just, doesn’t look right. Maybe that is because it was only 90% height, but it does look different than the rest. The sides look totally fine and 100% acceptable. The top, looks like it might the PLA might have been too warm and it started to sag between the honeycombs. Not horrible, but you can tell it sagged.

For the cube, I slowed the first layer down to 50% and the rest to like 75%. Takes longer but it seemed to be more specific

Great reference and thank you. I have leveled the bed several times. Actually, once I found that my entire extruder head was loose? WTH? How did that happen??? Tightened it up and it seemed to go good.

There are many screws/bolts in the CTC that will work there way loose which reminds me I need to by some lock tight and do all my bolts

Yeah it does work better. It’s definitely worth investing a little more time! :slight_smile: What material are you printing with?

I’m quite happy that one of the arms on the bed of the video is dropping, mines done exactly the same! I have to loosen the left ones completely!!

You can buy metal arms or extra braces , or even print extra bracing to stop/fix this.

Good idea, I was tempted to get some aluminium arms machined. Are they easy to fit do you think?

Printing PLA right now. Figured I would get the easy stuff down first. I’ll have to try that Glue Stick trick. heard it a few times now in various places.

Here are the pictures of the 20mm cube. If you look at the bottom, the PLA seems to be far apart in places. On the corner of one, there seems to be a separation, but it really isn’t a separation. Then on the top there seems to be a little bit of waviness going on where it looks like the plastic was pretty warm and it started to sink into the infill. The infill was only 10 % fast honeycomb.
Top wavy.jpg Bottom.jpg Side-Bad corner.jpg

205 is a little hot for PLA… My calibration cube did he same at 200… I use 195 for PLA… (and 70 is the recommended bed temperature)

I use a cooling fan which helps with sagging a lot. There are various designs out there - I use thing:537918 (requires a bit of extra cabling for an additional fan).

Tested did an video on youtube showing insalling some replacement arms, the ones I have bought just brace the plastic arms so just take out the bolts put the brace on and bolt up.

3 months later