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16 Jan 2020 18:46 #21433 by Dave Bright
Replied by Dave Bright on topic 3D Printing
‘Whistle’ while you work Brian? I’ll pop over at the weekend to collect

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17 Jan 2020 09:02 - 17 Jan 2020 09:03 #21441 by Phillip Ford
Replied by Phillip Ford on topic 3D Printing
I have three Phoenix gliders but only one wing joiner/securing plate. The originals were ABS plastic but have since cracked and broken up. That left just one joiner, from the last purchase, the pate has now been made of a nylon sort of a stuff and i think not really up to the job long term. So, scratching my head as how to solve this problem I went on thingys to make and found a 3D printer file for a Phoenix with top flat surface for accessories. But I don't own a printer.

Contacted Brian who immediately downloaded the file and who "said no problem". By the time I had had two dinners he got back to me and said "all done". Went over with the wing set and they fitted very well. 10 times more sturdy than HK's flimsy effort. The Guy who created the file needed the plate to carry a GoPro hence the flat surface with a slight downward tilt.

My thanks to Brian. Forgot to ask on Thursday. WhaddoIoweyou. ;)
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Last edit: 17 Jan 2020 09:03 by Phillip Ford.
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17 Jan 2020 17:43 #21452 by Brian Jackson
Replied by Brian Jackson on topic 3D Printing
Something I should have checked before starting the P-47 project has now put a stop to it. I should've checked the availability of the servoless retracts. Apparently they come from Hobby King, apparently they haven't been available for several months, and Hobby King won't commit to an availability date either.
Perhaps all the previous print failures were trying to tell me something?

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17 Jan 2020 20:05 - 17 Jan 2020 20:05 #21455 by Phillip Ford
Replied by Phillip Ford on topic 3D Printing
HobbyKing are virtually out of everything or anything useful. I blame Trump and his trade war or Hong Kong playing up.
Last edit: 17 Jan 2020 20:05 by Phillip Ford.

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18 Jan 2020 20:06 - 18 Jan 2020 20:23 #21464 by Brian Jackson
Replied by Brian Jackson on topic 3D Printing
3DLabPrint sent me an offer yesterday...20% off the price of their new model called Joker. Its a 1.7M sort of hotliner/electric glider. It uses Corona thin wing servos and a 9 X 6 folding prop/spinner assembly, both items from the well known warehouse! I checked with HobbyKing, both items are on back order. The video of the model being built is interesting,( the parts take 84hrs to print) at last they've got the joints easier to assemble and probably a lot stronger than plain butt joints as used on the P_47. The attention that they've paid to aiding construction is quite encouraging, the new method eliminates all the slight misalignments between sections. There are a couple of videos of the model, and if you look around, there is a video of the prototype, which looks all "pale and frail" as its made from translucent PLA. It was indeed "frail" as during the second test flight, the rear fuselage broke off during a fairly tight turn. The "production" model has a 6mm diameter carbon tube from the wing root to the end of the fuselage. Definitely worth thinking about, must be a source other than HobbyKing, pretty grim if an alternative isn't available. The P_47 project is on hold until I can source suitable retracts, thats the snag with a printed model, there's no chance at all of modifying the printed parts to accept an alternative unit.
I thought the Joker would be a good model to carry on with, perhaps there are suitable alternatives to the recommended prop and servos, we'll see!
Last edit: 18 Jan 2020 20:23 by Brian Jackson.

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20 Jan 2020 09:27 - 20 Jan 2020 09:28 #21491 by Brian Jackson
Replied by Brian Jackson on topic 3D Printing
I was looking at the P_47 wing parts yesterday, bit fed up with the whole thing, then I realised that I could tape over the U/C mount slots and wheel wells, and with luck, the model might survive until the proper retracts are delivered.
Filled with new but misplaced enthusiasm, I downloaded the program for the ailerons and elevators, loaded the printer and pressed "GO". I didn't do any pre-processing of the files, according to the designers, their files are meant to be used straight into the printer, I have an e-mail that confirms it too! According to the program, the parts would take about 23 hours to complete. Fortunately I checked the progress after a couple of hours. The picture says it all. From the state of things, it looked as though the program had overridden the crash detection built in to the printer. I must be missing something vital somewhere, it would seem that I can manage to print almost anything apart from model aeroplane parts.
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20 Jan 2020 13:06 - 20 Jan 2020 13:08 #21493 by Phillip Ford
Replied by Phillip Ford on topic 3D Printing

. I must be missing something vital somewhere.


Time to scour over all the details again. I am sure you will find a click box that will sort that out. Off subject slightly. ;) A similar sort of fiasco! I have just bought a new digital midi music controller and it seems I am so far behind with the tec now, I am wondering if I am ever going to get the hang of it. Apparently you now have to "map" all the keys and pads to the software instruments and so on..... In the old days you just plugged in the midi leads from one keyboard/synthesiser to another and select which one is master and which bank you want to use. Oh well, cold days and wet days will give me a chance of figuring it out.

I was hoping you might go back to the Black Wing again. ;)
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20 Jan 2020 19:51 #21497 by Brian Jackson
Replied by Brian Jackson on topic 3D Printing
Alas the Black Wing! I was too keen and too soon. Shortly after printing the model, we went to Australia for a couple of months. When we came home and I eventually got back to reality and the contents of my shed, I found that the flimsy sections of the Black Wing had warped quite badly. I messed around trying to align one section with another, but it was completely hopeless. A shame, the Eclipson Black Wing is the only model to have printed out straight from the designer's files without any problems. Things are on hold at the moment as I'm waiting for a delivery of suitable PLA filament. Looking around for alternative designs, I came across an outfit called PlanePrint.com. They have an interesting website and they offer a test print and all the info on how to do it. I just had to give it a go didn't I?
The designers are adamant that the only program that works with their designs is "Cura". I found that they are absolutely right. I tried their test print using different programs, the results were amusing but inconclusive. I downloaded and installed Cura and tried using the simple instructions provided, but this didn't work at all well. Finally I found a video of setting up all the parameters, instead of four or five simple instructions, the real set-up took an A4 page of notes. I generated what the designers call a Profile for the print. I printed the test piece, to my surprise it was just about perfect.
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21 Jan 2020 10:50 - 21 Jan 2020 10:53 #21502 by Brian Jackson
Replied by Brian Jackson on topic 3D Printing
I didn't include pictures of the test pieces in my last post, cold weather, age and a downright lack of attention to detail combined to ensure that my camera batteries were flat. Here are the test pieces. Left to right, printed directly from the download using "Simplify3D" software. The part printed with poor layer bonding in the initial layers, poor surface finish and no internal details. The centre sample was printed using the download and the few simple "Cura" settings recommended. Better surface finish, good layer bonding but no internal details. The right hand sample is the result of making notes while watching a demo"Cura" video (dozens of stops and starts) and a good deal of frantic scribbling. Finally, no less than twenty three adjustments to the printer program had to be made to achieve the final result. I imagine that the designers of 3D printable model aeroplanes assume that anyone with a printer is an expert, and doesn't need to be told how to generate a printer "profile". Its surprising to see the difference to the finished item made by tweaking twenty three lines of program. The sample program came from PlanePrint.com, The printer control software used was "Cura" a free program on the Internet. I downloaded the details of the Icon-A5 from PlanePrint, on the whole it looks to be a very well engineered model, if ponds weren't so wet and cold, I might have been tempted!
P.S. The pictures should be viewed from right to left to match the descriptions in the text above.
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Last edit: 21 Jan 2020 10:53 by Brian Jackson.

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22 Jan 2020 09:05 #21504 by Brian Jackson
Replied by Brian Jackson on topic 3D Printing
Printing the test piece from PlanePrint.com was surprisingly easy once I'd adjusted the twenty three values. The generated "profile" was duly labelled and saved, if I ever need to print a thin skinned wing section with internal details, all I'll need to do is load the appropriate printer profile into the program. After the PlanePrint test piece I found a helpful website that went into some detail about creating profiles for printing different sections of model aeroplanes. Naturally, the YouTube videos are designed for young minds that can absorb lots of stuff and quickly too, finally I found a site that had it all laid out, and as a bonus it was all printable. Fortunately I'd replaced the cartridges in the printer and bought a spare pack of paper. With all the info printed out, it was then just a matter of assembling the sheets in the right order and stapling the whole thing into a reference book complete with index, how posh is that? Realising that I was in for a long session of referring to the new book and making notes, I cleared my email inbox, in there was a mail containing several projects to be printed. I was taken by the bag clip with a screw topped spout. The item didn't need any special programming, I downloaded it just as it was and sent it to the printer. The clip is in three parts, main clip, insert and screw top. The clip is hinged, this is moulded in, allows the clip to open and close, and surprisingly needs no post processing to make it work. All this has nothing whatsoever to do with 3D printing a model aeroplane, however making something useful while sitting in a comfortable armchair and making notes etc for (hopefully) printing a successful model, can't be a bad way to pursue a hobby.
Yesterday the parcels started to arrive, two 1Kg spools of PLA filament, 9 X 6 folding prop/spinner assy. 30a ESC with 2A BEC, and four Corona slim wing servos, same as HobbyKing don't have and as a bonus £2 less than HK .
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