SoliForum - 3D Printing Community — Prints not sticking on the extremities

Re: Prints not sticking on the extremities

2015-07-04T14:29:19Z

One more trick that works for me for large prints that you may want to try: Using hairspray, after printing the first layer at 110C, drop the bed temperature below 90C and wait for it to reach the lower temp before continuing the print (I add an @pause to the gcode). I generally go to 90C but I've had to go all the way to 60C for one particular spool that is particularly problematic. Once the print is done, heat it back up to help removal without breaking the glass.

Re: Prints not sticking on the extremities

2015-07-03T14:05:08Z

all the above plus make sure your bed soaks at temp for a while before you start printing. Also make sure you have enclosed your machine if it's an open frame (SD2/Workbench)

Re: Prints not sticking on the extremities

2015-07-03T12:02:27Z

I would have to agree with a leveling issue being the cause of one side lifting all the time.
I used to have the same problem, before I began using glass - the aluminum bed was warped causing major frustration trying to get things to stick down properly.

as for the glue... there may be chemical make-up differences, but I am no expert on that. The purple is pretty easy to clean up - water is all you need, but sticky & a bit messy... it does work pretty well, but if you have a warped bed, it wont fix that.

seriously, if you aren't using glass - get some. some have had good luck with picture frame glass, I use cheap mirror tiles cut to size - works great and wont warp like the aluminum does.

then, get some aqua net super extra hold hairspray (purple can).

Leave the kapton tape on your aluminum bed, spray some hairspray on it- nice even coat, spray hairspray on the bottom of the glass/mirror - again, nice even coat, and set it in place on the aluminum bed... heat the bed to around 60C, let it cool, then heat to normal printing temps. the glass will not move, and no binder clips to cause issues.

You will need to adjust your Z stop a little to allow for the thickness of the glass, and re-level the bed before printing anything, but that should resolve any warping/leveling problems.

To use the hairspray for print adhesion - drop the bed down low & warm to around 50-60C - spray the bed side to side - you are looking for a nice even coating across the surface, let that set up, then spray again front to back (cross hatch pattern for good coverage), again, nice even coat. Heat to normal operating temps and start printing. Prints will easily pop off when the bed cools enough.

I used to use the purple glue sticks, but got frustrated with the frequent need to clean and reapply it... too much and it causes problems, not enough and prints dont stick well... the hairspray is much easier to use, & cleans up super easy with a bit of windex, and one application will usually work for multiple prints.

Re: Prints not sticking on the extremities

2015-07-03T11:37:40Z

calishark21 wrote:

Hey guys, so I have been tackling this issue. At the extreme endpoints of my print(even with a brim) starts to begin to curl up and throws the whole print off. Say I have a 4 sided flange, the three sides stick great the fourth comes up. Any ideas on a solution?

Use hairspray in cycles: spray, heat bed, let it cool, spray again, heat, cool...about 3 times or until bed becomes dirty with hairspray. Also it helps if the nozzle is set to push against bed (smaller Zoffset). No brim necessary. Dont clean bed. Spray from time to time.

Re: Prints not sticking on the extremities

2015-07-03T03:48:18Z

Is there a difference between the purple glue stick and the white ones other than color?

Re: Prints not sticking on the extremities

2015-07-02T19:23:46Z

if it keeps pulling off on the same side, it might be a levelling issue. I'd check that with the standard paper test, but if you haven't gone with a glass bed upgrade you really should. It doesn't have the warping and unevenness issues that other bed materials have.

Re: Prints not sticking on the extremities

2015-07-01T20:26:49Z

- Glass and hairspray(Aquanet)
- Level Bed
- 110 bed temp (ABS)

And use a bigger brim...if all else fails, I will break out the purple glue stick; but it gets messy.

Prints not sticking on the extremities

2015-07-01T20:22:03Z

Hey guys, so I have been tackling this issue. At the extreme endpoints of my print(even with a brim) starts to begin to curl up and throws the whole print off. Say I have a 4 sided flange, the three sides stick great the fourth comes up. Any ideas on a solution?