Nothing wants to stick (brand new machine)  

RE: Nothing wants to stick (brand new machine)

Hi 

yes i have also checked my temps with a infra red thermometer,and found the same thing.

I dont think it really matters much what the numbers say on the dispaly.... for me i found that 70 worked much better for pla and now i am using 90 for petg

the temp reading was at least 7c off

RE: Nothing wants to stick (brand new machine)

Seeing that scouring pad above made me wonder if a fine "sanding sponge", like the kind you use for smoothing bondo when doing auto body touch-up, might be effective for a deep-cleaning of the smooth plate surface. Has anyone tried that?

RE: Nothing wants to stick (brand new machine)

Hi JSW, 

Lots of people seem intent on using more expensive options.  

If something works for you, that is good... 

the abrasive sponges I have seen are quite coarse, I would not use one of them on My PEI... 

as an Honorary Yorkshire Lass, I gravitate to simple, cost effective, accessible solutions where possible. 

some folk have used 'Wet and Dry' abrasive products, I have noted mention of grades between 400 grit and 2000 grit... 

I don't have those handy, so I use Sponges, Dishsoap and hot water...      I keep my IPA for the SL1 Printer and medical use. 

Hairspray keeps my hair out of my eyes. 
Acetone removes Nail products, 
I have never tried Magigoo... 
I used Gluestick and ABS Juice with My Glass bed on the Mk1, but moved away from that with the Mk2 and Mk3... 
Talcum powder buffed into and loose material wiped off, stops TPU overbonding to the buildplate, 
Finger grease can substitute for Talcum powder. reducing adhesion.
If I get a print that sticks too well. I dribble IPA on the build plate around the model, let it soak a while, and then try to remove the model, again. 

regards Joan

RE: Nothing wants to stick (brand new machine)

Have you tried to use the 7 point bed leveling as opposed to the three? Using the 7 point takes a little longer but any differences in nozzle height are compensated better.

Phil

RE: Nothing wants to stick (brand new machine)

Hi all i would not dream about using wet and dry sand paper on my plates

For one thing they cost a lot of money  and dont want to have to replace one for doing something stupid

Yes i agree it can be quite difficult  i have had prolems my self today....

Gave it a good scrub in very hot water, solved a morning of not sticking

RE: Nothing wants to stick (brand new machine)

@angus

There is a bed temperature calibration routine in your calibration menu, takes around 10 minutes but may help getting the temperature closer to what is read by your thermometer.

Phil

RE: Nothing wants to stick (brand new machine)

I think I have success!, thanks for everyones input, love these forums to help out new users...the best. 

So what did I do, I grabbed some automotive Super Clean, a biodigradable degreaser and used that with a papertowel. set the bed tempature to 70 degrees and I have my first Batman 😀,

I came to me when I was cleaning my eyeglasses with a fresh cloth in the drawer it left a little smear on them and we might be using too much soap in the washing machine and that was transfering to the bed. who knows, Super Clean, paper towel and 70 degrees seem to work. 

RE: Nothing wants to stick (brand new machine)

@angus

Really pleased, your welcome 

Graham

RE: Nothing wants to stick (brand new machine)

@andy-stuart

This looks like a height problem, probably too high still. I have had different heights after changing nozzles or doing anything with the extruder. I once had a -1.485 height that gave me a perfect first level. There are so many variables when we deal with the extruder that once one has done it several times can identify the direction to move the firstlevel Z-axis adjustment by looking at the bead that the nozzle is laying down on the bed. Your bead looks as if it isn't squished down enough. The bead should look a lot flatter, not being rounded at the top.

The accumulation of filament seems to happen when the nozzle is too far from the bed to stick or when the filament will not stick due to residue on the plate. When you wash the PEI plate there should not be any residue on the plate, probably should have a dull surface. Here in Spain, I use a generic concentrated dish cleaner without any additives designed to protect your hands. Those additives such as balsam or aloe may leave an oily film on the plate.  Looking  at the plate's surface with light in the background it should present a smooth as well as uniform look.

Regards,

Phil