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RetromanIE

Ultimaker 2 Extended Fan screws

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A simple question, what are the exact screw types used to mount the 2 fans to the fan shroud on the UM2 Ext?

I've looked over the bill of materials and I just cant see it. I'm sure the information is staring me in the face :)

I ordered a Olsson Block and some nozzles and want to print off a new fan shroud, but I think the screws in the old one got damaged when i did another mod recently. So I want to replace them.

Thanks

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There have been a couple of different kinds used. Most recently they're using a machine type screw. The easiest would probably be to simply measure what you have, no?

 

Yes, that would be the sensible thing to do :)

I was hoping to get ahead of it and order whatever I need before I take it apart. I have time anyway as I only ordered the Olsson Block a day or 2 ago and that will probably take a while to arrive.

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Thanks, do you know the type of screws used. As in 10mm m4, m3 etc etc

 

Well, it's not a metric thread like all other srcews, its just a chipboard panel (or "SPAX") screw.

The 2.5x16 defines the outer diameter and the length in mm. You should get it in any hardware store.

Here is an example with image and a sketch with dimensions.

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Thanks, do you know the type of screws used. As in 10mm m4, m3 etc etc

 

Well, it's not a metric thread like all other srcews, its just a chipboard panel (or "SPAX") screw.

The 2.5x16 defines the outer diameter and the length in mm. You should get it in any hardware store.

Here is an example with image and a sketch with dimensions.

 

Thanks, I reckon if i cant get them with all this info then I should just retire :)

By the way, good job on that custom firmware. I've been using it for a while now and it's a lot better than the default.

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Print this one, and you won't need any screws to hold the fans in place.

https://www.youmagine.com/designs/um2-fan-duct

It's also one of the best fan duct designs. If necessary, print using Kisslicer to adjust using "Inset surface" to get a light press-fit with your fans.

 

It's really hard to tell which is the best design for the fan shroud. At the moment I'm using the Venkel shroud on my Ultimaker 2 Ext. It seems pretty good.

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