Lulzbot hexagon hotend differences than other

General Hardware
1

I am in the midst of designing a flexystruder that works with the hexagon hotend. I have heard that the one lulzbot uses is “modified” from the one that RepRapDiscount sells. I was wondering if anybody knows the exact difference?

I can see in the photos that the heat sync closest to the nozzle is thicker on the lulzbot version but that’s all I can really see.

Otherwise it looks like all I need to do is print the flexystuder with a large inset in the bottom to accommodate the top of the hexagon hotend. Also has anyone already done this?

Thanks

2

The bigger heater block seems to be the only difference I can find.

3

Check the top of the hotend, the cylinder that sticks out above the aluminum plate may be taller than the buda.

I think someone may have made an adapter plate to convert the existing flexistruder…

4

The following prototype is what I have used for the 4-5 flexistruders for the hexagon I made for a couple minis, a Taz3, and the Taz5 I assembled.

Since the TAZ and the mini use the same basic extruder it will work for either.

http://devel.lulzbot.com/mini/accessories/albatross/

Seems to be working for me so far(about a month now). YMMV.

5

I went ahead and made some slight mods to the original (made the inset in the bottom to fit the hex) and it’s printing now.

6

Printed my incarnation of the Flexy Hex and it looks great. Ordered a bunch or parts to go with it as well as scavaging parts off my old Buda setup. I plan on using this one for flexible filament of course so I am waiting to hear back from RepRap Discounts to see if I can buy it with a .5 nozzle already installed. (Iv’e heard that .50 nozzle is best for flexible filament)

7

Any more info on the Flexy Hex for the Taz 5?

I have an extra hotend and going to covnert it. But I don’t want to have re invent the wheel if its already been done and semi documented.

8

I have not complely finished mine as I had to steal the nozzle from my new hotend to fix my old one so I am not 100% certain it will work but it should. I will attach the stl file here.
Flexistruder Hex (repaired).stl (346 KB)

9

Printing it out now. Lets see how it comes together. Thanks!