Making Big Prints With The Longer LK5 Pro Printer

The Longer LK5 printer has a large print volume and a modern, full-color touchscreen.
Intuitive menu, simple assembly and strong, rigid construction.
Good print quality and fast heat up.
A good value, budget friendly printer.

LONGER LK5 PRO Upgrade with Dual Blower

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Code (with $30 off): LK5PRO$30

[eduardobarros]

I have a few suspicions about the weird layers at the beginning. 1, it can be that the bed is too hot for your filament, PLA should never have a bed hotter than 70 celsius, 2 it can be squishing the filament too much, and since you mentioned your bed is warped, it might be this. You should never level it with too much of a tolerance, always give it 0.005 to 0.015 mms more than you need, and since it looks like you have the sticky ultrabed, you wont worry about it not sticking if you have a nice surface for the first layer and an adequate temperature. And finally 3, your nozzle can be too hot at the beginning. Some softwares do give you the option to heat it more at the beginning, Cura does it, and if it heats up too much, the filament becomes completely liquid, like casting resin. You never want your filament to be liquid, you want it to not be frozen, nor liquid like water. Especially PLA, you want it to be very maleable but never able to drip like a non viscous liquid.
And those horizontal stripes are almost certainly related to the threaded rods or screws that lift the Z axis. I had them a little warped once, and instead of spinning in a completely straight axis, they kinad jiggled around, making those repeating layers outside their designed position.

[securityrobot]

I like your off the peg creature creations.

[robertmac]

I have this printer, I had a similar problem I found the printer was jerky and if it wasn’t on a very stable table it would make failed prints and poor quality prints. So I have to put it on my kitchen island and put stickers on the feet and this helped my prints significantly.

[farfaraway]

Its wonderful how you embraced new technologies sir. Many happy printings!

[per_sev]

I like the clothes peg designs at the end. esp the hyena.

[robinson-foundry]

Something no one talks about is ambient temperature fluctuations. if you have an air conditioned home, then its possible the air kicking on is what is causing the weird layer shifting at specific intervals.

[CobwebsandCandlesticks]

Love the honest pros and cons! No sugar coating!

[art-eroflore]

Im not at the point qhere i cab afford or have the space for a printer but im glad to find a reviewer whos an artist who just wants the machine to work- nowadays it feels like all advice about machines is “build it yourself! Fix it yourself!” Granted i built my computer but that was simple enough, i dont think ill be much of a tinkerer when it comes to thise. Just not my thing. I do like reading the comments to see what the tinkerers think!
Also i love the clothespin toys at the end, very cute!

[DAMorrison]

Looking forward to whatever you're planning once you've set up your printer farm.

[magnetomage]

If the zits disappear at the same level, I would check either the lead screw or the It might be a snagging issue with the cables when it is that low (I would check your cables anyway for things like strain relief as well since a lot of cheaper printers do not do a good job of strain relief on any of their cables)

[peircedan]

For myself I have stuck to using small mini type printers. With these it is easy to level the bed and I don't want to do prints that take longer than nine or ten hours. When I need a bigger item I break the design into manageable parts and bolt them together. A colleague of mine runs a big expensive printer at work with all the bells and whistles and it still has a lot of failed prints. He is doing more complex stuff and the machine has dual extrusion. There is just so much more that can go wrong.
As someone else pointed out with a big printer there is a temptation to use a raft. I never need one with my small printers.

[davidtragen]

Go Robert!!! I love the anglerfish and it would be great to see you create one of the clothes pegs for a future video!

[runklestiltskin_]

I started on a cr10s, had all the problems mentioned here, I am so happy with my Voron 2.4 now.

[fierceflyer]

Love the honest review, wish everyone on YouTube who received a free item was as honest!

[andyspillum]

LOVE the idea seeds! Don't know if I have clothes-pins but you just gave me a great idea for some sculpy and "trash" that I have been eyeing to repurpose. Thank You

[FSF]

The first layers being messed up is because your filament wants to be cooled but cura starts the first layers with no fan and ramps it up. This is done because when printers were newer, fan cooling would cause initial layer adhesion issues. Modern printers do not need to ramp up, ESPECIALLY if you print fast. I can get my Ender 3 clones to print at 400% of the stock "50 mm/s" print speed with almost no problem but the first layers looked like garbage until I just started turning the fans on manually from the first layer.

[thegrafxguy]

the garbage at the bottom can probably be attributed to 2 things: 1. too much bed temp, or not consistent bed temp. see if it allows you to PID tune the bed. otherwise it's probably just too hot for that filament. 2. your Z-axis lead screw/or z axis wheels either have a bend if it's the rod, or flat spots in the wheels. see if having it move up and down the z-axis causes weirdness every time it gets to a certain point.

edit: those drawings are rad!! lets see some of those casted!

[mfx]

Anything that appears at regular intervals I'd be looking at resonance issues.

[mercknucca]

The issue I had with mine was the rollers on the left side were all loss so the whole bed wiggled. I tightened those and did the paper test. Plus I took of the Teflon tube and reinstalled it as it seemed like it wasn't pushed all the way into the nozzle head. After that everything has been printing great. There is an auto leveler that longer offers its like 30$ I'm thinking about getting it

[Theexplorographer]

Definitely get yourself a large garden paver to set your printer on. The mass of the large block will smooth out your prints and also make it fairly quiet. One of my best printers is the first one I bought for $150. Granted, I put many hours of upgrades and tweaking into it. So is it the cheapest, no not by any means. Cheap to get into...but to make it work consistently and properly, many many hours invested. In contrast, my Creality 10s Pro, great out of the box and still perfect.