I have a extra nozzle if you want to buy it. It needs a thermistor and heat cartridge installed.

Certainly would have done so earlier, but I've already got the new E3D V6 in shipment.  I'm really looking forward to discovering how much this mod is going to impact print quality.

what carriage are you using kev?

I used a few different printed carriages but I am currently using a modified version of this
http://www.thingiverse.com/thing:709228
I basically threw away the top of the carriage widened the hole to fit the  e3d + fan so it can sit at the same height. I am holding the e3d with this  http://www.thingiverse.com/thing:879368

The height is determined by the platform I use to hold the stepper motor.  the stepper motor platform was epoxied to the carriage.

it works pretty good.

mark.burton wrote:

. . .  but I then switched over to a  printed carriage . . .

which printed carriage design did you go with? im looking at upgrading to the e3d as well. thanks

I'm interested as well.  Do tell.

Also, I'm a bit confused with the PTFE liners in the E3D V6.  Some places say that all 1.75mm hotends have the PTFE lining and are therefore limited to 260C or so.  Others make it sound like a partial liner is fine and you can still hit 300C safely.  I'm finding all sorts of conflicting information.

My filament supply is all 1.75mm ABS right now
1) Is a PTFE liner desirable for standard ABS printing?  (If so, highly or marginally?)
2) Can the PTFE liners be removed/reinserted when I want to switch from ABS to Nylon?  (Only relevant if the PTFE liner is highly desirable for ABS and "worth the trouble" of switching)
3) Are any Davinci parts (heater, fan, thermistor, etc.) reusable in an E3D, or do I need to replace them all?
4) Any suggestions for navigating the maze of E3D hotend suppliers?  I want a low price, but not a low-quality knock off.  What do I look for?  (I see most cheapo units have their thermistors insulated with PTFE tubing which would melt long before 300C)

Before going to the expense/trouble of switching out the extruder, you might want to have a go at modding the stock extruder with some extra heatsinks and repositioning the fan.
I added a couple of small heatsinks next to the feedtube and moved the fan down so it blows right over the feedtube and the nut which secures the hotend.
It's a ridiculously easy mod and I'm getting great results printing with all the types of filament in my signature.
I haven't tried nylon but there's a good chance it'll work with that too.

His stock extruder is toast. he mangled the tip which is all part of the heat block as you know due to a broken off drill bit. That's why he is looking to replace.

I like the e3d and you can do it on a day. there are sever different carriage designs or one that uses the original carriage.
I used the original carriage at first but I then switched over to a  printed carriage since the adjustments on the original I had to keep fiddling with it to keep it working and printing flexible materials was something you had to really keep a eye on. 

With the extruder that I'm using now I don't have to do that as it guides the filament right from the gear all they way to the hot end.

which printed carriage design did you go with? im looking at upgrading to the e3d as well. thanks

With the extruder that I'm using now I don't have to do that as it guides the filament right from the gear all they way to the hot end.

carl_m1968 wrote:

kev0175 wrote:

I bought a hot end off of eBay (throat, block, nozzle, and thermistor) for around $13. The only bad part is the throat is 6mm and the bottom of the carriage is if I'm not mistaken 10mm so you would have to find some kind of way to brace it. I had some fuel line from my rc car and I put that over the throat. It worked for a little while.

At 13 bucks on Ebay you will get what you pay for. If you are going to replace the hotend setup then it is best to go with an E3D or a B3 Pico if you really want to go all out. All of these require modding or replacing the existing mounts and if the printer with the issue is your only one then you are limited to your options.

Well he said he wanted to go the cheap route so that's the cheapest I could think of.

Both of these are options.  (Ebay-generic or nice E3D)  I've got a small lathe, so making a reducer bushing would be trivial.

My main goal in spending is that I want to print more materials, with nylon sort of my "holy grail".  If the E3D could give my Davinci those capabilities with reasonable quality, I'll happily go there.  OTOH, if the rest of the printer has no chance of printing things like nylon, I'd rather start saving for  one that can.  Plus I love the idea of being able to swap different nozzle sizes in and out.

Should running an E3D in a Davinci give decent results?  (I've seen people have done it, but most write ups were very verbose, and I haven't been able to read through them yet.) 

Ideally, I should keep away from anything that would require more than 8-10 hours of fiddling to install.  (If I need 3d printed parts, I should be able to bum some from friends at the local makerspace. )

kev0175 wrote:

I bought a hot end off of eBay (throat, block, nozzle, and thermistor) for around $13. The only bad part is the throat is 6mm and the bottom of the carriage is if I'm not mistaken 10mm so you would have to find some kind of way to brace it. I had some fuel line from my rc car and I put that over the throat. It worked for a little while.

At 13 bucks on Ebay you will get what you pay for. If you are going to replace the hotend setup then it is best to go with an E3D or a B3 Pico if you really want to go all out. All of these require modding or replacing the existing mounts and if the printer with the issue is your only one then you are limited to your options.

Well he said he wanted to go the cheap route so that's the cheapest I could think of.