PMillett Landfall heatsink

[pmillett]

I used acetone to clean it up, though I think it only works before it cures...

Pete

 

[Magz]

Thanks Dave and Pete, just trying to be prepared based on your experiences. Murphy says it WILL get where I don't want it to be.

 

[davefl]

By the way, Pete also has the heatsinks listed in his ebay store along with all the boards he made for them. Now you can see everything in one place and can get them from him or us - same either way.

 

[davefl]

I would be interested to know if the Landfall heatsink "rod section" will fit through an existing octal socket chassis hole?
That would seem to be the most useful, as most of us have chassis punches/drills that size.

NEW INFO

Yes, we now have a way to do that. We can make a spacer to fit any size hole and have made one for a 1-1/8 inch octal socket hole and another for a 1-1/2 inch hole. Here are some images of the hole sets you'll need to make. I did these by hand instead of "cheating" with the CNC router.

 

[davefl]

Here are pictures of the channel and heatsink with spacer for a 1-1/8 inch hole mounted in a scrap piece of our chassis material. You can see how the channel is attached to the chassis and the heatsink to the channel. Just use heat transfer compound on the surfaces of the spacer and channel before you screw them together. The octal socket is shown for reference so you can get a scale of the whole thing. The spacer attached to the bottom of the heatsink is just barely larger than the octal socket.

 

[davefl]

And here are pictures of the pieces for the 1-1/2 inch hole. We didn't attach the spacer to the heatsink since it is permanent, but you can still see how they go together.

 

[davefl]

So, does this seem like a good idea?

The spacer to fit an octal socket hole seems to make sense, but can most of you make larger holes? Any input for common sizes of punches or hole cutters that you use would be greatly appreciated.

We made these holes with Klein carbide tipped hole cutters. Blair Rotabroach cutters come in these sizes too. I believe both of these are also common for punches. However, I have no idea what sizes are common for metric tools.

 

[Magz]

I just took one of your pinned heatsinks and glued it to the top of my chassis with the Loctite, with the hot component (DHT filament supply) attached to the other side of the chassis. The chassis alone was getting too hot but adding the pinned heatsink to it knocked the temp down several degrees to where it should be fine.

 

[davefl]

I just took one of your pinned heatsinks and glued it to the top of my chassis with the Loctite, with the hot component (DHT filament supply) attached to the other side of the chassis. The chassis alone was getting too hot but adding the pinned heatsink to it knocked the temp down several degrees to where it should be fine.

Sure would be nice if you could buy the Loctite in small (cheap) squeeze packs for one-time use, it's great stuff. We couldn't make these without it.

 

[davefl]

I should mention that the spacers are 0.125 inch (3.175 mm) thick, same as our chassis lids. The sheet used for the 1-1/2 inch hole in the post above is 0.090 inch thick and you can see how the spacer is thicker. You'll just need to keep the spacer thickness in mind when fitting these to your chassis.