<![CDATA[SoliForum - 3D Printing Community — printing squared circles]]> https://www.soliforum.com/topic/12707/printing-squared-circles/ Wed, 04 Nov 2015 14:01:50 +0000 PunBB <![CDATA[Re: printing squared circles]]> https://www.soliforum.com/post/108873/#p108873 well my printer isn't printing well,
and im not too versed on s3D yet so I cant get the tensioner printed.

]]> Wed, 04 Nov 2015 14:01:50 +0000 https://www.soliforum.com/post/108873/#p108873 <![CDATA[Re: printing squared circles]]> https://www.soliforum.com/post/108853/#p108853 If you want to go direct drive print this:
http://www.thingiverse.com/thing:593006

Buy these for coupling the motor to the shaft:
https://www.amazon.com/gp/aw/d/B004HW71 … &psc=1

https://www.amazon.com/gp/aw/d/B004HW71 … &psc=1

Buy a 6mm diameter shaft from anywhere (I like McMastsr-Carr), and cut it to size.

]]> Wed, 04 Nov 2015 01:57:34 +0000 https://www.soliforum.com/post/108853/#p108853 <![CDATA[Re: printing squared circles]]> https://www.soliforum.com/post/108844/#p108844 thankyou to everyone for all the help
hope the tension print gets done tonight.

]]> Tue, 03 Nov 2015 21:56:39 +0000 https://www.soliforum.com/post/108844/#p108844 <![CDATA[Re: printing squared circles]]> https://www.soliforum.com/post/108819/#p108819 pirvan wrote:

I had the same identical problem, and it was due to backlash on the small belt.  Some people fixed the problem by doing a direct drive setup, I solved it by adding a tensioning idler bearing.

http://www.soliforum.com/topic/8357/y-s … belt-slop/

I haven't had any flat spots on my circles since I did this mod.

ill try this see what happens

]]> Tue, 03 Nov 2015 14:09:59 +0000 https://www.soliforum.com/post/108819/#p108819 <![CDATA[Re: printing squared circles]]> https://www.soliforum.com/post/108776/#p108776 so what you guys have been saying is that small belt from the y axis motor is sloppy?

so where is the file to print the tensioner?

or how would I do direct drive for cheap

]]> Tue, 03 Nov 2015 01:53:06 +0000 https://www.soliforum.com/post/108776/#p108776 <![CDATA[Re: printing squared circles]]> https://www.soliforum.com/post/108771/#p108771 if you want to fix flat circles forever and be done with it, go direct drive. no other option is better. search the forum. that small belt is sloppy. it makes tensioning the belts easier too.

]]> Tue, 03 Nov 2015 01:30:29 +0000 https://www.soliforum.com/post/108771/#p108771 <![CDATA[Re: printing squared circles]]> https://www.soliforum.com/post/108763/#p108763 so now i have just a very slight flat edge in those same spots
the bars seem to be aligned.

not sure what to do now.

its still rough to move the y compared to the x axis .
the x axis is super smooth and not even close to as tight as my y
why is this so hard for me?

]]> Mon, 02 Nov 2015 23:43:46 +0000 https://www.soliforum.com/post/108763/#p108763 <![CDATA[Re: printing squared circles]]> https://www.soliforum.com/post/108760/#p108760 +1 to what Tim said. I've been using Ian's belt tension gauge since I started printing. It's easy, a relatively quick print, and accurate. If you understand this concept, you don't need to print a thing. Just use what you have lying around.

]]> Mon, 02 Nov 2015 23:25:43 +0000 https://www.soliforum.com/post/108760/#p108760 <![CDATA[Re: printing squared circles]]> https://www.soliforum.com/post/108759/#p108759 The x rods should be square to the  Y. If they are not.  this could be the source of binding.  Or as heartless put it not properly aligned.
Tin

]]> Mon, 02 Nov 2015 23:07:15 +0000 https://www.soliforum.com/post/108759/#p108759 <![CDATA[Re: printing squared circles]]> https://www.soliforum.com/post/108741/#p108741 elmoret wrote:

You can also hang a weight from the belt and measure how much it deflects, which is proportional to tension.

now I just feel dumb, that that didn't cross my mind.

]]> Mon, 02 Nov 2015 21:51:02 +0000 https://www.soliforum.com/post/108741/#p108741 <![CDATA[Re: printing squared circles]]> https://www.soliforum.com/post/108735/#p108735 You can also hang a weight from the belt and measure how much it deflects, which is proportional to tension.

]]> Mon, 02 Nov 2015 20:46:49 +0000 https://www.soliforum.com/post/108735/#p108735 <![CDATA[Re: printing squared circles]]> https://www.soliforum.com/post/108733/#p108733 heartless wrote:
ryan-mm85 wrote:

so im pretty much screwed then, because I have no way to make sure the tension is the "same"

it isn't that difficult if you have feeling in your fingers. if they feel about the same, they should be fine. you don't want one tight and the other loose.

before you give up, at least try it. roll

oh I get what you are saying,
I thought I needed like special method. lol

ill check that stuff tonight hopefully.

so the left and right carriages being slightly misaligned would give me a rough Y axis travel then?

]]> Mon, 02 Nov 2015 20:33:22 +0000 https://www.soliforum.com/post/108733/#p108733 <![CDATA[Re: printing squared circles]]> https://www.soliforum.com/post/108720/#p108720 ryan-mm85 wrote:

so im pretty much screwed then, because I have no way to make sure the tension is the "same"

it isn't that difficult if you have feeling in your fingers. if they feel about the same, they should be fine. you don't want one tight and the other loose.

before you give up, at least try it. roll

]]> Mon, 02 Nov 2015 19:09:24 +0000 https://www.soliforum.com/post/108720/#p108720 <![CDATA[Re: printing squared circles]]> https://www.soliforum.com/post/108719/#p108719 so im pretty much screwed then, because I have no way to make sure the tension is the "same"

]]> Mon, 02 Nov 2015 19:00:52 +0000 https://www.soliforum.com/post/108719/#p108719 <![CDATA[Re: printing squared circles]]> https://www.soliforum.com/post/108718/#p108718 heartless wrote:

loose set screws are a potential problem - you will need a 1.5mm hex driver/allen key to make sure they are tight.

If the Y axis (front to back) is not smooth it means the left & right carriages are not properly aligned. With the power off and disconnected, loosen those set screws, and work the carriages back and forth - don't force things - until things loosen up and they do move smoothly, then re-tighten the set screws, being careful to keep things in alignment.

belts should be snug - no slop in them - but not overly tight, either.

a quick test is with carriages all the way back you should just be able to pinch the 2 sides of the belt together about in the middle of space between carriage and idler pulley with a little bit of resistance - both sides need to be even in tension, too, or you will end up with misalignment problems again.

your last long sentence I don't understand. I think I need a comma or a period somewhere.

]]> Mon, 02 Nov 2015 18:59:12 +0000 https://www.soliforum.com/post/108718/#p108718