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Author Topic: 3D printing tips and trick.  (Read 1028 times))

Online Insanity

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3D printing tips and trick.
« on: April 21, 2020, 07:14:07 PM »
I want to compile any tips and trick everyone has to to share and help others with their 3D printing endeavors. I have wasted many a spool of filament learning on my own I am a trial by fire kind of guy and in doing so I have been able to learn a lot and then be able to help others more readily.

My first tip is more of a bandaid one and that is on a glass print bed if your print is not fully sticking use a Elermrs brand purple glue stick a even coat really can help a lot with it pulling up on one side.

My second tip is buy some feeler blades to assist you in leveling your print bed. I use a .002"/.051mm feeler blade I have found that the thinnest one is too thin to get a good feel. Also IMO if its thinner than your layer height I have found it to be good enough for most prints I do.

3rd I have found that a good retraction and Z hop reduces a lot of stringing. I retract 6mm and Z hop 2mm it isnt perfect but my string has all be went away.

I have found with my two preferred brands of filaments and across ABS, PLA and PETG that the hotter the better. I get better layer adhesion and resolution. That is at .2mm to .8mm layers.

ABS loves heat and dose best in a contained environment so a enclosure with no vents works great. ABS also stinks and some think it to be bad for your health to breathe the fumes. I don't know about that but I do know it dose stink. ABS is just like a lego brick its strong and durable.

PLA is the easiest to learn on it is very forgiving and generally cheaper than other filaments. It is not durable and doesn't like direct sunlight and isnt as durable as ABS.

PETG is as I can describe it a hybrid of ABS and PLA and that it is durable doesn't care about direct sunlight dose not stink and is some what forgiving on your settings. The most trouble with PETG I have had was stringing and retraction and Z hop greatly reduced that.

Cleanliness is next to 3D printing-ness you have to keep your nozzle and print bed clean. I have lost quite a few prints because I got lazy and didn't wipe off my print bed.
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Offline travelbike

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Re: 3D printing tips and trick.
« Reply #1 on: April 21, 2020, 11:58:16 PM »
I used to have problem with adhesion on the bed.  What works for me now is to use the painters blue tape. I use 2" blue tape and cover the printing area of the bed. I then scuff it up with sandpaper.

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Offline T3PRanch

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Re: 3D printing tips and trick.
« Reply #2 on: April 22, 2020, 12:38:37 AM »
I used glue sticks, blue painters tape and now my print bed (glass) is covered with polyimide tape otherwise known as Kapton. I then use regular unscented hair spray for excellent adhesion. I never have adhesion problems now but I mainly print with various petg formulations. A favorite is CF in PETG!
« Last Edit: April 22, 2020, 12:51:57 AM by T3PRanch »
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Offline oldpro

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Re: 3D printing tips and trick.
« Reply #3 on: April 22, 2020, 12:36:59 PM »
 I like to change my nozzle often and I also wash my plastic off before i use it. Another thing I do Is I put a foam pad under my printer to absorbe the vibrations.When plastic gets brittle I soak it in near boiling water to sofen it up then let it cool to room temp this has saved me many spools. 
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Offline theairgunmeister

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Re: 3D printing tips and trick.
« Reply #4 on: April 22, 2020, 03:01:55 PM »
Any time you switch brands or types of filament, take the time to do calibration prints before you try printing anything useful. These really help you dial in the settings to get the best finish and strength possible.

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Re: 3D printing tips and trick.
« Reply #5 on: May 09, 2020, 01:14:48 AM »
I had done quite a lot of major changes to my Ender3 and I had been struggling to get a good base layer put down. Well after getting over my ego of I have done everything to the T to level my bed I changed my layer settings to default in Cura and then did a hot level while printing. All issues solved for about half of my print bed, I need to do the other half but it was good enough to get a better print for a customer. Some times our knowledge surpasses our common sense and we over look the obvious as we are just too smart to even consider that is a possibility.

I have a print to hot level the bed while printing and one for a cold level with a feeler blade. I got so stuck on just using the feeler blade that the print leveling was ignored. That had cost me over half a spool of filament with failed prints.
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Offline NAIAD001

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Re: 3D printing tips and trick.
« Reply #6 on: August 16, 2020, 05:05:34 PM »
Relatively new to 3D printing. 2 months under my belt. Loving it so far. Some things I've learned on this voyage:

1. As you have said, keep the bed clean. I use 50% Isopropyl Alcohol at least once every 2 days of printing.
2. After having little success with the Ender 5 Pro's default magnetic plate , I upgraded to the Creality ultrabase glass bed, which is awesome for $20 and helps with leveling as the metal base is prone to warping.
3. Using PLA mostly, I always have the bed at 60 Degrees, this helps a lot.
4. Ensure you are getting 100% extrusion. Do a test by marking the filament at the entry point of the extruder out to 100mm, 110mm and 120mm. Heat up your nozzle. Then extrude 100mm in your feed setting. This will  highlight if you are over/under extruding. In any case, adjust your ESTEP settings. Best video for this is here: Cant post the link, but the title on youtube is: Fix Under Extrusion With Extruder Calibration (Estep)
5. Purchase a dual drive extruder head. This will prevent any filament slips which also cause under extrusion.

With all of this said, I have never had to use anything to help with bed adhesion.


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Offline luge007

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Re: 3D printing tips and trick.
« Reply #7 on: July 26, 2021, 06:41:26 AM »
No idea how I missed this thread almost a year ago, but the site is getting SO BIG.


I agree with Andy on pretty much everything he said.  As a noob to 3D printing with only 40 or so successful prints, I have learned a lot (with quite a bit of help from Geo via PM)
I tried EVERY trick to get glass bed adhesion and nothing worked well for that first layer bond.  I THOUGHT I had it down, then about a half hour into the print, it would pop, lift, or curl up an edge.  Out of desperation and wanting to get a crank bait print done, I flipped the bed over to the plain glass side, cleaned it obsessively well with isopropyl alcohol and let her rip.  Combined with changing the bed temp to 61 degrees in the LCD screen helped too.  I found printing the PLA at 204 also helped with layer adhesion a lot, especially running at 100% speed. 


I too struggled with bed leveling for a bit, tried feeler gauges, different papers etc. and it sort of worked but the first layer was still not perfect.  Setting "level" with the bed at operating temperature turned out to be the key to a great first layer. 


Maybe not the right place to bring this up, BUT. are the temperatures listed on the filament spool and recommended online the 'set' temperature on the machine, or the ACTUAL temperature verified by an infrared thermometer?



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Re: 3D printing tips and trick.
« Reply #8 on: July 26, 2021, 08:50:13 PM »
If I ever have a part that dose not stick well I do a brim to help keep it down.
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Offline One-Shot

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Re: 3D printing tips and trick.
« Reply #9 on: November 09, 2021, 09:37:20 PM »
Regarding the issue of bed leveling, and having the first layer print correctly, and sometimes itís easier said than done with some printers, a simple solution is to change the orientation of the part by lifting one side by 3 degrees. A square part will essentially print the contact edge only, and not the whole face/surface. Back in 1995 when I owned my first 3D printer, this is how I built every part. Support material was my friend :-)
This also prevents the parts from warping by a considerable amount, because there isnít as much stress being introduced into the material by trying to bind it to the table, and other variables in regards to temperatures and cooling
effects etc
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