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Anet A8 Bed Level Upgrade

by Malcy, published

Anet A8 Bed Level Upgrade by Malcy Apr 3, 2017
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Summary

This is a better way of adjusting the screws on your Anet A8 when levelling the bed. This mod requires you to drill out the threaded holes in the aluminium H frame (use a 3mm drill bit), they will wear out eventually anyway.
Push the wingnut into the thumb wheel.
Use a spare M3 nut to clamp the screw to the heated bed.
Fit a cup on either end of the spring, place it over the screw and press the screw through the enlarged hole in the H-frame and screw on the wingnut.

To level the bed now, there is no need to use a screw driver.

Hope you like this upgrade.

Print Settings

Printer:

Anet A8

Rafts:

Yes

Supports:

No

Resolution:

0.1

Infill:

100% & 30%


Notes:

I printed the spring cups at 100% infill for extra strength.
I printed the thumb wheel at 30% infill.

How I Designed This

There are probably loads of variants of this design, this is probably very similar to other designs. I am trying to design all my own upgrades for the Anet A8, some will be based on what I see but they are all my own design unless stated otherwise.

The thumb wheel is a good tight fit on the wingnuts which came with my Anet A8. The Spring Cups have a 3.5mm DIA hole for the screw. I have oversized it by 0.5mm to account for printing accuracy.

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Really handy - the thumbwheels make adjusting easier but most usefully they add enough friction to the nuts to stop them backing out. I used to have to re-level after every print, but now it seems to be good for 100+ of hours of printing before redoing the bed level. This kit is a huge time saver! I might even put a tiny drop of HT silicone gasket on the top of each thumbwheel to add even more friction...

I had to grind my frame a little bit for the wingnutknobs.
Easy leveling - thanks!

Since the kit consists of a set of bushings and nut, how do you split the infill? Also, some say that the nut hits the left rail. Does yours? And if so, can you split out the bushings from the nuts?

Thank you for a great build.

the knob on the right side of my bed hits the front frame of my anet a8, can anyone help?

It does on mine as well. Time to find a new knob.

Excellent design and those spring cups are also a nice touch. Much better then the captive nut knob. Just printed four sets. Waiting for my upgraded GT2 belt to arrive and then I will install. Thanks for sharing!

Thanks for the great comments. Glad you like it.

What are the Threaded Rod holders that you have in the pic?

They will be for securi g the A8 to something solid to help keep it square.

I haven't fitted them yet but when I do I'll add them on here

The stl file is broken...

Wow, does this ever make an improvement to the bed leveling process.

The print came out perfect, fit the spring and the wing nut perfectly, and easily the best upgrade I have done to the printer yet.

Thank you!

Thanks for your comment. It is a much better method of adjusting the bed. I have had an issue with my upper spring cup deforming. I'm trying to do a redesign but it might be possible to use an M3 nut and washer to clamp the spring cup against the bed.

Does not fit the wingnuts that came with my printer, too tight.

Well that could be for a number of reasons. Printer calibration - mine is pretty good, a 30mm cube comes out at 30.02mm (with my verniers). Make of wingnut - They might not be the same as the ones which came with my printer. Slicer - Different slicers seem to give different results, I use CURA 2.3.

Perhaps you could increase the scale slightly in your slicer, maybe try 105% or something, see how it fits???

Thanks for the feedback

Yeah seems like the wingnuts are different, after a bit of filing they fit (filing the wingnuts)

Great news :o)

Apr 11, 2017 - Modified Apr 17, 2017

Many inverted faces, some slicers may have trouble with this.

Does this work with PLA?

Yes. The parts in the pictures are printed in PLA.

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