Discussion in 'OpenBeam Kossel Reprap and OpenBeam Kossel Pro' started by grainiac, Sep 20, 2015.
Thanks this was not planned in the first place believe me!
@grainiac - Thanks for sharing.
Couldn't you pull the 24v from the PSU input? - the fan is "always on".
The other alternative; if you're content with the Brainwave Pro/Marlin, is to use a 12V fan system and switch the FAN VCC's voltage jumper (it's next to the 10-pin header box shroud). I've verified with a bench PSU+multimeter that both the always-on and fan outputs are 12V when the jumper is set that way.
Squirrel cage fans are plentiful in the 12V range, and the E3Dv6 fans are offered in a 12V flavor as well (may want to chat with your vendor of choice to see whether or not they're willing to keep/swap the heater).
There are other alternatives like fabbing a PCB with FETs/diodes to do logic-level PWMing.. but that's smacking a fly with a cannon IMO.
zip file appears to be blank
Woooooohoooooo! Not used to Github yet, apparently.
@grainiac - could you repost that zip file? All it has are two empty directories.
I'm looking for the ducts for the standard version but I didn't see them in the git repo.
[Edit| Are the Magnetic Hot End Holders compatible with the standard End Effector?
Questions, questions @grainiac - where did you get the brass inserts?
I added the Fusion 360 design to GitHub (F3D folder):
The blower fan duct and the E3Dv6 holder/duct is designed to be compatible with the standard and the magnetic arm version of the end effector base. You'll find everything in the STL folder or pre-sliced for printing in ABS on the OBKP in the GCODE folder.
@degreaser, I found my brass inserts on:
100 for about $6 USD. The first batch I got were 10 for about $7. This new order is being shipped from China, so might be a little while. I've used up the first ten and they worked just fine. I ordered the same design the second time.
Can someone confirm the center-to-center spec spacing of the rods? It appears to be 41mm + 10mm?
I've been wrestling with printing with ABS. Delamination, clogged Jhead, warping, just about everything that could go wrong did. Finally got a set of FSR mounts printed, working on the end effector now.
BTW, I got my inserts yesterday - so seven days to get them from China, not too bad!
Curious - what OD and length did you get?
So here is a stupid question. What inserts should I get if I want to use the E3DV6 end effector (V2) with the stock KP rods and joints?
My current thinking is to go to 12V fans (via the jumper). I have the E3DV6 in hand, and a spare KP PCB (from my failed flirtation with the K-head).
@grainiac - other than fans and inserts are there other materials I would need to do this mod?
A spool of ABS filament and 14pcs of M3 brass inserts. I use special inserts for plastic from Martin Bondeus (I asked him nicely for 100pcs and got a good price!): http://shop.bondtech.se/ec/components/thread-insert-m3.html
Btw. the Bondtech QR upgrade is also on it's way and I guess it will look great on the Kossel!
M3 5mm outside diameter, 4mm long. I measured them and the outside diameter is actually 5.87, i.e. a nominal 6mm.
Are you referring to the long aluminum inserts (standoffs) that the stock shoulder bolts screw into?
Yes that is what I was thinking about originally.
[QUOTE="grainiac, post: 6207, member: 437"]A spool of ABS filament and 14pcs of M3 brass inserts. I use special inserts for plastic from Martin Bondeus
Thanks. I am assuming it will be obvious how to assemble all this once it is printed.
can somebody help me print this?
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