First Layer Adhesion

My Raise3D Pro2 printer has BuildTak on the Printing Platform. My filament is eSun PLA+ 1.75 mm. Platform Temperature is set to 50C. Nozzle clearance from Platform at 'Home' is 0.2 mm. My first layer does not stick to the BuildTak properly (even with 3DLac PVA spray). There is always some material swaying around in the breeze (so to speak). Download the gCode here.

How do I get my First Layer to stick?

Thanks

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"Some people
seem to misinterpret
complexity as sophistication."
(Nicklaus Wirth)

My first thought is that your hot end is too high. The classic "paper" test for leveling is 0.004 inch, or 0.1 mm, no matter what the nozzle size is. Try baby stepping your nozzle down at the start of the print to get a good "squish" of the first layers, and you should be O.K.

I like to do about 5 circuits of the nozzle for a skirt (or brim), before the actual print starts. That gives me a chance to observe, and correct, the first layer squish before commiting to the print itself.

Clean your BuildTak surface with some i70% or better sopropyl alcohol, most likely your already have.

Then Try printing again.

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Computer Programmer / Electronics Technician

White vinegar also works well for cleaning build surfaces. I heat my bed to 50c and gently rub the plates several times to get any residue and oils off the surface. The heat ensures it evaporates quickly to avoid any risk of damage from letting the vinegar stay on the surface too long.

Edited 1 time(s). Last edit at 06/07/2020 01:45AM by obelisk79.

Quote
obelisk79
White vinegar also works well for cleaning build surfaces. I heat my bed to 50c and gently rub the plates several times to get any residue and oils off the surface. The heat ensures it evaporates quickly to avoid any risk of damage from letting the vinegar stay on the surface too long.

I had a BuildTak surface and cleaned it many times and never got good results, Posted here many times of my results.

I even had to cover the surface with Transfer paper to achieve good surface adhesion.



My personal BuildTak observations. I am adding this last comment. " with all fakes today who is to say that this was not a fake BuildTak Bed Surface "
I removed this brand new surface 2 years ago in attached post below and still use a cheap chinese surface today with perfect adhesion.
[reprap.org]

Edited 3 time(s). Last edit at 06/07/2020 09:57AM by Roberts_Clif.

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Computer Programmer / Electronics Technician

Thanks folks.
I'll try to get some Isoprop. Hard to do. It's all in hand sanitiser these days .

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"Some people
seem to misinterpret
complexity as sophistication."
(Nicklaus Wirth)

I had a lot of trouble with PEI. What I discovered is that I had the hotend temp too high and used too much fan speed.
I ended up turning the fan off except for small areas and lowering the hotend temp 5-10° and it started sticking very well.