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Di3 v2.1 Spacer for Thorped's Fan Duct

by charlesdill, published

Di3 v2.1 Spacer for Thorped's Fan Duct by charlesdill Jun 29, 2016
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Tinkercad

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Summary

This spacer will adapt Thorped's WANHAO Fan duct to a Di3 v2.1 bearing block.

One edge is a bit thinner for a better fit under the belt because I have this belt clamp installed.

Installed using two M4 x 35mm button head screws with washers under the heads, inserted from the front of the printer, with spring washers and nuts on the back. I had to grind the screws down to ~32mm and use regular nuts with spring washers, instead of nylocs, so the fan would clear.

After printing, I cleaned it up and simply glued the spacer to the duct holder.

Print Settings

Printer:

Wanhao Duplicator i3

Rafts:

No

Supports:

No

Resolution:

0.2mm

Infill:

30%

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If your bearing bracket doesn't have a hole in the bottom, use one of these http://www.thingiverse.com/thing:2164124 in the bottom hole from the back

I have a Di3 2.1 rebrand and the bearing bracket only has holes on the top two for the bottom bearing

M4 Bolt - 27mm - 10mm Thread

Is it just me or does the spacer make the whole duct sit back away from the hotend about 5mm or so?

Any chance to get STP file?

I have no way to do that, sorry.

or any drawing with dimensions? trying to combine it with the BL-Touch mount

I do have a model of the v2.1 bearing block that I made, also in Tinkercad, if you want..?

It would be great! thanks

Here's the one I used http://www.thingiverse.com/thing:1767378.

I see there is another by someone else as well http://www.thingiverse.com/thing:1548091.

Wanhao Duplicator i3 v2.1 bearing block dummy
Wanhao Di3 LM8LUU Bearing block

I made the spacer in Tinkercad using an import of Thorped's fan duct. I never used any dimensions, just built it out so that it would fit snugly into the duct.

Thank you for this

I just went to install this on my Maker Select V2 and realized that there are no holes on the bottom of the lower part of the bracket. So there are 4 holes for the upper nearing holder and only 2 for the lower bearing holder (the bottom 2 holes are missing). Did you have to drill holes for those bottom screws?

Only two screws go through my spacer, the fan holder and one side of the bottom bearing block. Take a look at the photos. I don't know that the v2 bearing blocks are the same as the v2.1.

Jul 22, 2016 - Modified Jul 22, 2016
spiff72 - in reply to charlesdill

I'm not sure if this link will work, but here is a photo of mine. Notice the bottom bearing block only has screws installed in the upper two holes (the steel bracket doesn't have the holes in it for the bottom).

Note this is the Monoprice Maker Select V2 (which I thgouth was equivalent to the Wanhao Duplicator i3 V2.1)...

https://goo.gl/photos/xUniMfJrdXPqTnjLA

Yeah, it's the same. You have to drill the missing hole. Mark the lower right hole (from the back) of the bottom bearing block with a pencil and drill it out. Remove the block before you drill so you don't trash the threads.

Hmm - something just occurred to me. I wonder if I could use an M4 screw (pan or button head), installed from the BACK, ino that bottom hole, and threaded into the brass insert in the plastic?

I didn't realize that the screws needed to thread through that insert and then just protrude back with the extra nut (I printed everything and ordered the fan without removing the extruder). As a result I was thinking I could just use #8 screws and nuts, and now I see that I need the M4 screws, with a fully threaded body.

I am trying to avoid doing any modifications to the printer that aren't "reversible". I will try all this tomorrow, but I need to measure and see if I can get my hands on a screw for that bottom hole that is just the right length.

That should work.

Jul 4, 2016 - Modified Jul 5, 2016

35mm ground down to 32mm. The space between the fan and the holder is a bit too tight for nylocs. There's more info in the post-printing section.

What length M4 screws did you use?

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