Chimera Dual Extruder Mount

[CaptainMerica]

Made a quick adapter piece to bolt up my new chimera hot end to my max v2, I plan to have this made out of aluminum, but i may end up designing a completely aluminum platform to specifically hold the chimera hot end. I whipped this up and quickly saw the smiley face that it had generated, so naturally I had to add some angry eyebrows on the top surface which will be visible.

[lightninjay]

Just a preliminary note about your print (nice design by the way), it appears as though you might be over-extruding just a tad. Have you calibrated your extrusion rate?

[CaptainMerica]

Currently our rostock max v2 is "on loan" at a local company that did some laser scanning for us and their printers couldn't print this wax mold core making filament, but ours could, so while they have our good printer, my brothers friend said, well you can borrow mine in the meantime. So thats what this was made on, a monoprice dual extruder el cheapo. its basically a replicator 2x clone.

so some of this is kind of a, meh, close enough to see if it would work and the make it out of metal. I figured i wouldn't have this loaner printer for more than a couple days so i didn't really spend much time dialing it in. that being said also the computer that usually runs the rostock is at my brother's and as such i don't have his configs to go from.

But i do definitely appreciate the input, this is the first couple pieces i have ever printed in PLA, most everything is abs, but you think i have it set just a hair high on the filament feed-rate? I have been fighting this printer to get the bed to actually heat at all too, matter control exports a m190 code to heat the bed, and the printer is expecting a m109 instead. reason being is the printer takes a .X3G file which mattercontrol can export to, but i just cant quite seem to crack the bed heater code. the best i could do is preheat the machine, start the print, and allow the bed to cool down to ambient but at least the first couple layers were warm. printed at 205/60 i think on this one.

As far as the design, we got word yesterday, that the ezstruder modified to make the soft filament, had broken, which makes the 3rd time it has broken for us, (after a lot of hrs of prints to be fair). so the company said that if we design one up they would CNC it for us. soooo now we should be getting cnc'd aluminum extruder's as well as an aluminum platform specifically for mounting the chimera hot end. which would render this adapter to fit it to the stock platform useless. oh well. I get bored at work

EDIT:

On a side note, does anyone use a chimera hot end? i am suspicious of the way the fan is mounted directly to the heatsink and i feel like it is an extremely inefficient design, in that, there is no air moving across a large section of the fins due to the fan hub covering ~50% of the cooling area? and also, its just pulling air in the corner's (triangles if you will) and out the fan, not pulling air all the way across the fins from side to side. I mean obviously it must seem to work because they keep selling them, but I just think it looks like it would be a problem.

[0110-m-p]

and also, its just pulling air in the corner's (triangles if you will) and out the fan, not pulling air all the way across the fins from side to side. I mean obviously it must seem to work because they keep selling them, but I just think it looks like it would be a problem.

The fan doesn't pull air across the fins and out the fan, it pushes air into the fins/channels of the heatsink. I haven't got mine up and running yet though, so I can't comment on how well it works.

[CaptainMerica]

ahhhhh reading the instructions here again, i see that i must have misread that, though i did mount it as depicted. but even such, i would think there is a lot of space around the center of the fan that would still not be used. like, even a small spacer would allow the air to flow around the fins that otherwise are just static. think of the shape of the air that comes out of the fan, only where the blades are, right? air doesnt flow from the center area which is covered by the motor and hub of the fan, but with a spacer or standoff it would fill that area "underneath" the hub with pressurized air and therefore would flow across all of the fins.

More or less, i think the design as produced has a large amount of unused cooling fin because with the fan butted up to it would just be cavitating in the center.