Proudly presenting the Bondtech Extruder V2!
After the initial beta series I have received valuable input from the beta-testers around the world of how to make the extruder even better. I have really been pushing myself to implement all these improvements during the last month.
The V2 has the following new exiting features
Version for 1.75 mm and 3.0 filament will be available.
Integrated high quality Push Fit connectors for bowden tube.
Improved drive gear geometry, increases grip even further.
Optimized filament path for trouble-free operation.
Reduced clearance between drive gear and housing eliminates risk of tangled filament.
Bowden tube and fittings integrated into front of extruder housing for ease of disassembly or service.
EasyOpen holder makes removing the extruder easier.
It is now time to start the next batch and I am now taking orders for the next version, in order to calculate the number of components needed I would be grateful if you could send me an e-mail to order@bondtech.se if you are interested and for which version the 1.75 or the 3.0 mm.
There will be full kits with SLS-printed housing parts in nylon, geared stepper motor, all mechanical parts and also the possibility to buy kit with only the mechanical parts if you prefer to print your own housings, for best performance I recommend the SLS parts in nylon.
I expect to be able to do the first deliveries in about 2-3 weeks.
Your V1 gears will work fine @Matt_Miller i have found some things that could be improved and as I always try to find the best solution for trouble free operation I have decided to make some small modifications.
@Martin_Bondeus is a man for which the journey to perfection never ends. Bravo and congratulations on V2. My alpha unit is still performing perfectly, and my beta units are producing my best prints to date. Now these improvements in V2 take an already exceptional product and make it better still.
I swear you don’t sleep Martin. Love your work. Great job as always.
@Ashley_Webster note I don’t have mine mounted on a printer yet but it it is directly feeding an E3Dv6 hotend while I get my CRAMPS board calibrated. My quick setup doesn’t have anything in the small gap between the extruder and the hotend but I expect to use a small piece of tubing there when I want to print flexible filament. (its basically the only place that it can escape should the hotend clog, this is essential I think because the extruder does not give up on trying to get filament to go in
Just got mine in the mail a few days ago, now there is a newer version! It looks like this revision will take care of the issues I have been having, trying to get mine setup.
Nice work!
Are the STLs available for this version yet? I’d like to upgrade mine.
@Jason_Barnett What temps, speeds, and filament is that. I only had this happen once on the alpha unit when I first started. I was using cheap, brittle, oversized filament, running to cold, and too much pinch pressure. Since then I run hotter, print faster, and go easy on the pinch pressure. I have had zero issues since. The problem is the extruder can force so efficient that it doesn’t slip. So your settings must be correct. A normal extruder would just grind or jam. This one has more snort, so what can’t go up, must go out so to speak.
@Eclsnowman That was with a new spool of ABS (which I had not tried to print on this printer before). I have been fighting ooze issues and got a bit carried away with the retraction. I believe it pulled melted plastic into the cold heatsink area, causing it to clog.
The extruder worked great, did not slip at all. I think the new design will prevent this problem by having less clearance around the gears.
The other issue I had (multiple times) was the bowden tube coming out of the retaining nut during a clog (PLA this time). Again, the new design uses push-fit connectors and a longer lead-in for the bowden tube, which should prevent this problem as well.
@Jason_Barnett hope so too. The odd thing is I have yet to have a bowden tube push out from the nut. I have been using the same thing on hercustruder for a year plus. I hear about others with that issue, I just haven’t had it. But then again I print mostly in ABS, so jams are less common in ABS than PLA. Some days I think PLA is great, and some days PLA is my sworn enemy.
ABS is always my trusty friend though, so I have that going for me
