New Extruder design - MB Mk6 Gear drive

[scottmayson 0]

Hi All,

Here is a version of the extruder redesign with OEM parts inc MakerBot Mk6 drive gear. http://www.thingiverse.com/thing:15749

Cheers

Scott

[owen 19]

Hi Scott

It looks good.

Is the MakerBot Mk6 drive gear the only part we need to buy?

OK, I just noticed we'd need a spring etc. as well.

[scottmayson 0]

Hi Owan,

You need the Mk6 gear and two 106x3 bearings from

http://www.hobbyparts.com.au/

and some cap screws etc

I've just used an OEM spring probably get one from the "big green shed"

Scott

[owen 19]

Hi Owan,

You need the Mk6 gear and two 106x3 bearings from

http://www.hobbyparts.com.au/

and some cap screws etc

I've just used an OEM spring probably get one from the "big green shed"

Scott

Great, sounds easy. Thanks for that.

[tom 0]

This is the drive gear you're talking about correct? :

http://store.makerbot.com/mk5-drive-gear.html

I seem to be a little lost on the bearings though. I'm not very familiar with how bearings are measured. Can you link an example 106x3 bearing that would work for this?

Additionally, would this be printable in pla or would it need to be in abs since it has direct contact with the motor?

[scottmayson 0]

Tom, thats the one! re the bearings look at the web link above. basically they are ID6, OD10 & 3mm width. You can print it in either material. However, you need a heated bed to print ABS successfully.

 

This is the drive gear you're talking about correct? :

http://store.makerbot.com/mk5-drive-gear.html

I seem to be a little lost on the bearings though. I'm not very familiar with how bearings are measured. Can you link an example 106x3 bearing that would work for this?

Additionally, would this be printable in pla or would it need to be in abs since it has direct contact with the motor?

[tom 0]

Would there be any benefit from the MK7 gear drive over the MK6? they look pretty much the same besides the dimensions. I'm looking into building your design, so I figured I'd ask before i bought the pieces just in case there was some benefit you might know of.

[didero 0]

Hello,

Don't you think that for your design (or even for the original extruder design) placing a kind of circle flat rubber band around the extruder bolt could be a good idea ?

I think it could avoid the marks engraved in the filament while giving even more gripping if using appropriate pressure...

Any opinion ?

[thedudevt 0]

 

http://www.thingiverse.com/thing:15749

give me a 404 error. Is this project dead?

[scottmayson 0]

Its been replaced today

http://www.thingiverse.com/thing:19551

 

[polymorph 1]

It looks like Makerbot is dropping all their parts for people building/upgrading their own 3D printers. Everything but a complete Mk7 head and one other item is out of stock, and is findable only via Google.

So I'm hoping someone else starts making those drive pulleys. There was an IndieGoGo project that ended in June, he calls them "Hyena". Also sells a shaft threaded on both ends with the grooved drive area cut into it, looks made for Ultimaker. Haven't checked the sizes.

[polymorph 1]

The hobbed gear is now available from Portland, OR:

http://store.trinitylabs.com/hobbed-pulley-by-blddk/

Hobbed bar shaft, may fit Ultimaker but ships from somewhere in Europe so shipping may kill me. He also makes Makerbot-style hobbed pulleys, with a variety of hole sizes:

http://shop.arcol.hu/item/hyena