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Those black propellers look very good. How did you get them to print so cleanly? I tried using supports but mine turned out like your grey ones
Rik
Re: Summertime, and your printer's seem idle?
Posted: Sun May 22, 2022 5:26 am
by philipy
ge_rik wrote: ↑Sat May 21, 2022 9:53 pm
Those black propellers look very good. How did you get them to print so cleanly? I tried using supports but mine turned out like your grey ones
Yes, I agree. I did look at the possibilty of volunteering when Phil first asked, but decided that the propellors would prove too difficult and kept my fingers off the keyboard.
Re: Summertime, and your printer's seem idle?
Posted: Sun May 22, 2022 7:56 am
by -steves-
ge_rik wrote: ↑Sat May 21, 2022 9:53 pm
Those black propellers look very good. How did you get them to print so cleanly? I tried using supports but mine turned out like your grey ones
Rik
Simple, I printed it without support on the flattest side. Tends to print better with no support than a huge area of support. I think they will sand down very nicely.
Re: Summertime, and your printer's seem idle?
Posted: Sun May 22, 2022 11:37 am
by Phil.P
Steve, Rik,
Many thanks for your efforts! - I did wonder if a propeller / fan would be awkward to print..
Quite a complex shape to draw.
Having messed with model planes, in a previous life, It will be interesting to see the result.
Thank you again! - Now all I will need to do, is finish them.
Phil.P
Re: Summertime, and your printer's seem idle?
Posted: Sun May 22, 2022 1:05 pm
by -steves-
Phil.P wrote: ↑Sun May 22, 2022 11:37 am
Steve, Rik,
Many thanks for your efforts! - I did wonder if a propeller / fan would be awkward to print..
Quite a complex shape to draw.
Having messed with model planes, in a previous life, It will be interesting to see the result.
Thank you again! - Now all I will need to do, is finish them.
Phil.P
I too am an ex model plane fanatic, flying everything from super fast foamies, through to 111cc 10ft wing span fully aerobatic models, I even entered a couple of competitions at one point The 4 blade fan I have just tried, suffice to say you need a VERY light chassis with VERY free running bearings. I am going to use 3mm ball bearings in mine once I design it. Not the most efficient prop I have ever seen, maybe the 2 blade might be more efficient?
I have had to make a couple of change to the CAD work as the motor does not fit unless you want to take out 0.3mm manually, so I have redesigned one with a 0.4mm bigger hole, this works and is far easier to fit a motor inside. I have also changed the back plate for the same reason. Just reprinting them now.
All the best
Steve
Re: Summertime, and your printer's seem idle?
Posted: Sun May 22, 2022 1:26 pm
by -steves-
Well... I can confirm the 2 blade is FAR more efficient, which is how I thought it would be. The 4 blade was super noisy, had to spin flat out whereas the 2 blade is half throttle and much quieter.
Here is the 2 blade, I did not video the 4 blade as it struggled to get around. I didn't try reverse, I will later, lol.
Re: Summertime, and your printer's seem idle?
Posted: Sun May 22, 2022 1:57 pm
by -steves-
A couple or so pictures.
Please ignore all the lines on mine, they are done on lowest quality prints and are purely for testing.
Re: Summertime, and your printer's seem idle?
Posted: Sun May 22, 2022 2:36 pm
by ge_rik
Must admit, I didn't try putting mine together. I just printed them off. Hopefully, you should be able to make something with them, Phil.
Rik
Re: Summertime, and your printer's seem idle?
Posted: Sun May 22, 2022 4:14 pm
by -steves-
Just so everyone knows, the fan is also way more efficient if you leave the protection cover off. I am not going to fit mine, if someone is stupid enough to stick their hand in a fan, which can only be accessed from the rear and makes one hell of a screaming sound, then who am I to argue with natural selection
Re: Summertime, and your printer's seem idle?
Posted: Sun May 22, 2022 4:27 pm
by philipy
-steves- wrote: ↑Sun May 22, 2022 4:14 pm
if someone is stupid enough to stick their hand in a fan, which can only be accessed from the rear and makes one hell of a screaming sound, then who am I to argue with natural selection
Reminds me of a time, MAAAANY years ago at school. We had built a propeller driven, aircraft diesel engine powered, R/C controlled, racing car. In trying to start it in the normal way by flicking the prop, it kicked...and I still have a large scar on my finger to prove it! Back then of course, 'elf n' saftee didn't exist. However there was a positive bonus, my English Language O Level exam was the next day and I had a large dolly on my finger so a note was attached to my paper explaining that I was incapacitated... and that is how I passed my O Level at the third attampt!
Re: Summertime, and your printer's seem idle?
Posted: Sun May 22, 2022 10:46 pm
by Phil.P
Steve,
Excellent! That passed the smile test.
I had thought a 'commercial' 3-blade propeller, might be an option?
Phil
Re: Summertime, and your printer's seem idle?
Posted: Mon May 23, 2022 2:30 pm
by Phil.P
Rik,
Something just blew-in with the Postman..
Thank you!
Re: Summertime, and your printer's seem idle?
Posted: Mon May 23, 2022 2:35 pm
by -steves-
Hoping to get mine in the post Wednesday for Thursday / Friday delivery. Not forgotten, just delayed.
Also my track brush has been keeping my very busy indeed in the spare micro seconds, I think it's on V4 now and still needs work
Honestly, my life is a soap opera, it really is, most things that happen are just so surreal!