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Printer Quality

Posted by N314 
Printer Quality
October 05, 2012 05:00PM

I built a Prusa Mendel in the spring of this year.

I have an engineering class coming up in a few weeks and would like to have my printer printing well so I can use it for this class.

What are all the improvements one can:

a. Do fairly cheap as I am a student with a small budget
b. Require actual investment

Im all in for mcgyver solutions as long as they work, I just want to be printing at the very best quality and accuracy possible.

Re: Printer Quality
October 05, 2012 05:04PM
Add diagonal braces to stiffen the frame. There are a few printable version available as well as the mcGyver method of using what ever you have to triangulate the frame in the direction it needs strength.

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Re: Printer Quality
October 05, 2012 07:47PM
Where would braces go on the frame without obstructing the print?

Re: Printer Quality
October 05, 2012 09:06PM
Re: Printer Quality
October 06, 2012 11:16AM
That is why the circuit board was mounted on a board on the top in the original Sells Mendel.
To provide lateral support at the same time as holding the circuit boards.

Bob Morrison
W├Ârth am Rhein, Germany
"Luke, use the source!"
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Re: Printer Quality
October 06, 2012 05:48PM
What else can I do besides adding braces?

Re: Printer Quality
October 06, 2012 06:00PM
It would depend on what you already have on your printer.

Herringbone gears for the extruder is nice.
Switching to T2.5 belts is a good upgrade from T5.
Metal/machined pulleys can be an important upgrade depending on how good your printed pulleys are.
Some people like z screw constraints, I have better experience with a floating x gantry, and I'm switching to M5 z leadscrews to eliminate wobble.

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Re: Printer Quality
October 07, 2012 01:20PM
I actually need help fixing my Z wobble. Its pretty for the bottom 1~2cm of a print but then gets progressively worse. Ive tried Z constraints, but there was little change if any so im not currently using them. What can I do?

I currently have T5 belts on, how much of a difference is made by switching to T2.5 or how are GT2s?

Also the PLA bushings I received are so-so. Ive thought about replacing both the Y and Z axis bushings with linear bearings. Would this make much difference/where can one get them?

Re: Printer Quality
October 08, 2012 08:56PM
Beuler, Beuler, Beuler...
Re: Printer Quality
October 15, 2012 10:25PM
Waiting to make an order from ultimachine to get these... so can someone tell me if they're worth it?

Re: Printer Quality
October 17, 2012 12:27AM
How parallel are your smooth z-rods?

- akhlut

Just remember - Iterate, Iterate, Iterate!

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