Circles a bit off the mark - RCCanada - Canada Radio Controlled Hobby Forum
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Old 07-29-2020, 11:35 AM   #1
davidmc36
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Circles a bit off the mark


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What would you tweak to make this better. PLA at 217 nozzle temp.
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Old 07-30-2020, 12:39 PM   #2
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Re: Circles a bit off the mark

It looks like it is not sticking to the bed.
-Is your bed level?
-Do you have a heated bed?
-Was 217 what your printer manufacturer recommends? I use 190 on mine when I run PLA


Also, I read a few blogs about running your machine slower on the first few layers to allow the molten plastic more time to ooze out and stick onto the bed. Depending on what slicing software you are using, some have a toggle that allow you to turn on this feature that slows the print speed for the first few layers, then goes to your normally programmed speed after that.
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Old 07-31-2020, 02:19 PM   #3
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Re: Circles a bit off the mark

They say like up to 220 for PLA I read. D3fault was 215 from Prusa Slicer. The first prints I tried shrunk away from cooling. 217 instead of 215 cured it. Also, higher bed temp, no elephant foot, it sticks good now.

That print stuck to bed fine. This was subsequent layers that were supposed to incrementally make the diameyer of hole smaller, countersunk shape.

Speed was the first thing that came to mind to me. I'll have to look at the App and see if certain layers could be altered.

Wouldn't matter if the whole thing was slower. Start and walk away.
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Old 08-03-2020, 06:39 AM   #4
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Re: Circles a bit off the mark

Looks like your first layer is to "high". The first pass should press it self down and flatten out slightly. I use a piece of copy paper and set the height until there is a slight drag between the nozzle and the bed in all positions. This sets the foundation for all the other levels - It can stick but be to rough for the next layer to bond to well.

Cant help out much with settings as I use Cura but it also looks like the layer height might be a bit high or its under extruding a bit. A 45 deg "reverse" countersink should be easy to do for most printers.
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Old 08-03-2020, 08:45 AM   #5
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Re: Circles a bit off the mark

I never put first layer that low. I just dialed down to get the profile recommended. Never have an issue with sticking and other prints look smoother in that area about 3 layers deep with a lot of cross hatch in it. This print was surprisingly rough.

I have been suspicious of height of subsequent layers though.

Will chop a portion of this file out to try a few tweaks.
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Old 08-04-2020, 11:07 AM   #6
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Re: Circles a bit off the mark

Not perfect but a lot better once I found the rest of settings for supports. That allowed me to print Right-Side-Up.
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Old 08-04-2020, 01:49 PM   #7
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Re: Circles a bit off the mark

Quote:
Originally Posted by davidmc36 View Post
Not perfect but a lot better once I found the rest of settings for supports. That allowed me to print Right-Side-Up.
Excellent.

...so.....what is it?
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Old 08-04-2020, 06:58 PM   #8
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Re: Circles a bit off the mark

Protective case.

https://irlock.com/products/markone-beacon-v3-0-beta
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Old 08-04-2020, 07:23 PM   #9
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Re: Circles a bit off the mark

Quote:
Originally Posted by davidmc36 View Post
Very Cool!!!!!
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