<![CDATA[SoliForum - 3D Printing Community — Invisible layer lines! How is it possible?]]> https://www.soliforum.com/topic/18277/invisible-layer-lines-how-is-it-possible/ Fri, 22 Nov 2019 11:46:39 +0000 PunBB <![CDATA[Re: Invisible layer lines! How is it possible?]]> https://www.soliforum.com/post/151919/#p151919 carl_m1968 wrote:
Maurone999 wrote:

I also have additional trouble: my stepper motor has 3mm arm and the threaded rod is 5mm... so it's hard to find the right flexible coupler. I'm waiting for this and I hope it's good

https://www.amazon.it/gp/product/B0758F … &psc=1


They are the only I find 3x5!

https://www.ebay.com/sch/i.html?_nkw=3m … +5+coupler

Unfortunately it takes a month to arrive in Italy. Too much time:( on Monday couplers I bought from Amazon will arrive.

In the meantime, I replaced my 10mm nut with a 30mm one and threaded rod seams to has less vibration, but it isn't still perfectly aligned with the stepper motor arm, especially at the bottom where I can notice more threaded rod wobbles.

It seems like the stepper motor is not in the right position... but I can't move it because the screws are in a fixed position.

Some advice?

]]> Fri, 22 Nov 2019 11:46:39 +0000 https://www.soliforum.com/post/151919/#p151919 <![CDATA[Re: Invisible layer lines! How is it possible?]]> https://www.soliforum.com/post/151911/#p151911 Maurone999 wrote:

I also have additional trouble: my stepper motor has 3mm arm and the threaded rod is 5mm... so it's hard to find the right flexible coupler. I'm waiting for this and I hope it's good

https://www.amazon.it/gp/product/B0758F … &psc=1


They are the only I find 3x5!

https://www.ebay.com/sch/i.html?_nkw=3m … +5+coupler

]]> Thu, 21 Nov 2019 23:43:30 +0000 https://www.soliforum.com/post/151911/#p151911 <![CDATA[Re: Invisible layer lines! How is it possible?]]> https://www.soliforum.com/post/151910/#p151910 I also have additional trouble: my stepper motor has 3mm arm and the threaded rod is 5mm... so it's hard to find the right flexible coupler. I'm waiting for this and I hope it's good

https://www.amazon.it/gp/product/B0758F … &psc=1


They are the only I find 3x5!

]]> Thu, 21 Nov 2019 23:24:37 +0000 https://www.soliforum.com/post/151910/#p151910 <![CDATA[Re: Invisible layer lines! How is it possible?]]> https://www.soliforum.com/post/151909/#p151909 justsomeguy wrote:

I use one like this:

https://www.aliexpress.com/item/328580 … b201603_55

I cannot open the link.

does it solve vertical alignment troubles?

]]> Thu, 21 Nov 2019 23:10:28 +0000 https://www.soliforum.com/post/151909/#p151909 <![CDATA[Re: Invisible layer lines! How is it possible?]]> https://www.soliforum.com/post/151907/#p151907 justsomeguy wrote:

I use one like this:

https://www.aliexpress.com/item/328580 … b201603_55

Your link does not work. Looks to have too many referrals in it. Here is the correct link.

https://www.aliexpress.com/item/32858062442.html

]]> Thu, 21 Nov 2019 22:01:36 +0000 https://www.soliforum.com/post/151907/#p151907 <![CDATA[Re: Invisible layer lines! How is it possible?]]> https://www.soliforum.com/post/151906/#p151906 I use one like this:

https://www.aliexpress.com/item/328580 … b201603_55

]]> Thu, 21 Nov 2019 20:42:05 +0000 https://www.soliforum.com/post/151906/#p151906 <![CDATA[Re: Invisible layer lines! How is it possible?]]> https://www.soliforum.com/post/151905/#p151905 Here my coupler

http://soliforum.com/i/?FGsyWMB.jpg

]]> Thu, 21 Nov 2019 08:56:57 +0000 https://www.soliforum.com/post/151905/#p151905 <![CDATA[Re: Invisible layer lines! How is it possible?]]> https://www.soliforum.com/post/151904/#p151904 heartless wrote:

as a side note, if you already have the old one out, try your local hardware store.. take the old one with you to verify size.

This printer is driving me crazy hahahaha

I replaced threaded rod with a straight one. Vendor didn't know if the pitch was 1mm or 0.8mm but the rod perfectly fitted the nut. I mounted it but the results ware worst than before because it is a fully threaded rod and it is impossible to mount it perfectly vertical because of screws on the coupler push and pull it badly.

So I mounted again the old thread rod (that is not so bent) because it has a smoothed bottom part. I tried to adjust the vertical position with the screw on the coupler, screwing and little unscrewing those trying to find the right position, but it is almost impossible because of the tension caused by the screws in the coupler that push and pull the rod.

So I think the trouble is the coupler!

How can I solve this problem? Flexible coupler is a good idea?

Thank you for your time :)

]]> Thu, 21 Nov 2019 08:55:12 +0000 https://www.soliforum.com/post/151904/#p151904 <![CDATA[Re: Invisible layer lines! How is it possible?]]> https://www.soliforum.com/post/151893/#p151893 as a side note, if you already have the old one out, try your local hardware store.. take the old one with you to verify size.

]]> Wed, 20 Nov 2019 00:12:06 +0000 https://www.soliforum.com/post/151893/#p151893 <![CDATA[Re: Invisible layer lines! How is it possible?]]> https://www.soliforum.com/post/151892/#p151892 no, a flexible coupler will not fix the wobble caused by a bent screw.

5mm threaded rod, 0.8 thread pitch should get you back in business.

]]> Tue, 19 Nov 2019 23:57:43 +0000 https://www.soliforum.com/post/151892/#p151892 <![CDATA[Re: Invisible layer lines! How is it possible?]]> https://www.soliforum.com/post/151890/#p151890 heartless wrote:
Tin Falcon wrote:

5 mm well nut

a well nut is not going to fix a bent rod, Tin.

5mm threaded rods are typically available with only one thread pitch.. the one I linked to earlier should work just fine.

What you suggested seems good, but I'm in Italy and I would like to avoid paying too much for the shipping. If. The screw pitch is almost standard I will try to order something in an Italian shop.

Do you think a flexible coupler will reduce rhe wobble?

]]> Tue, 19 Nov 2019 12:53:25 +0000 https://www.soliforum.com/post/151890/#p151890 <![CDATA[Re: Invisible layer lines! How is it possible?]]> https://www.soliforum.com/post/151889/#p151889 Tin Falcon wrote:

5 mm well nut

a well nut is not going to fix a bent rod, Tin.

5mm threaded rods are typically available with only one thread pitch.. the one I linked to earlier should work just fine.

]]> Tue, 19 Nov 2019 12:35:25 +0000 https://www.soliforum.com/post/151889/#p151889 <![CDATA[Re: Invisible layer lines! How is it possible?]]> https://www.soliforum.com/post/151888/#p151888 5 mm well nut

]]> Tue, 19 Nov 2019 11:45:44 +0000 https://www.soliforum.com/post/151888/#p151888 <![CDATA[Re: Invisible layer lines! How is it possible?]]> https://www.soliforum.com/post/151887/#p151887 heartless wrote:

honestly, i would not recommend buying "cheap" printers to anyone, you get what you pay for.

this is a lead screw - has special "nuts"...

http://soliforum.com/i/?FbfXn3q.jpg

this is a threaded rod - takes regular nuts...

http://soliforum.com/i/?gOoKTlX.jpg

Perfect! Mine is threaded rod. So, if I know the diameter is 5mm and max resolution 0.001, what screw pitch is mine?

It is not so bent, do you think with a flexible coupler I can mitigate the trouble?

]]> Tue, 19 Nov 2019 08:41:46 +0000 https://www.soliforum.com/post/151887/#p151887 <![CDATA[Re: Invisible layer lines! How is it possible?]]> https://www.soliforum.com/post/151886/#p151886 carl_m1968 wrote:
Maurone999 wrote:

Moreover, if I know my screw is 5mm of diameter, and the maximum resolution is 0,001mm, the screw pitch has to be fixed, the same of other screws, right? I mean, there are thousand printers with a z screw of D 5mm and a resolution of 0,001mm, so there must be a sort of standard given by mathematics... Or not?


You can buy an entire new printer of this type on ebay for $200 that alone is worth the price in spare parts. Just buy a new one and use your old one for spare parts.


You are completely right, I saw Ender 3 on alibaba for 200$, and this is a good printer, but what I have now is a sort or gift and I am attached to that.. And I also would not buy another one just because I already have one working fine related to what I have to do at the moment. Without wobble it would be almost perfect for me

]]> Tue, 19 Nov 2019 08:37:06 +0000 https://www.soliforum.com/post/151886/#p151886