3D printing Widgets

The joy of getting older, unexpected challenges to old knowledge. I too wondered as to why you thought them incompatible and now I know why. As to the supplier not giving you an answer,.... time costs and is not worth their while.

I don't think I posted that I had ordered a Laser cutter, Atomstack A10, that was on the 9nth, I'm still waiting for it to be delivered, checking on the site its been counting down the days to shipping. Today's count is;
02:07:45 hopefully that means 2Hrs, & mins & counting.
There's one listed as being available for shipping from UK, clicking on my order takes you to that. That the trouble with Aliexpress every time you go in its different.

As for the replacement analogue servos I ordered when I was confused, they came this morning.
Guess what..........
 
 

The only difference is the sticker on the case!

And a bit inside

When the countdown reached zero it said "Supplier failed to ship - Order cancelled" so that was 9 days wasted.
So I ordered one from someone else, this came up with "Will ship in 9 days". Obviously the same outfit so I cancelled that.
My payment has been refunded to the bank account I use for Paypal so at least I don't have the prospect of the hassle to get it back.
Atomstack are using different names on Aliexpress so they have been relegated.

There is one one Ebay being sold by mineplay1 but that is in Shanghai & the review raises a big shadow, they might not have any either & they could also be Atomstack in disguise.

I'm now looking at the 10W Creality Falcon. Its a shame because the Atomstack looked a good machine.

We've jumped from £3 servos to a £300 lazer cutter!  

No just £200 plus safety glasses.

My mistake - I was looking at the 20 watt version.

Now, why did I laugh. Ah well you know now no need to worry.

Apparently with the Chinese New Year holiday nothing can happen until next tuesday, even the UK support.

I've installed LaserGRBL & exported a dxf file as an SVG from LibreCad which LGRBL has read OK. I need a machine now to see that LGBRL speaks to it.
There are parameters for speed, intensity etc but I also cannot do much with them without a machine.

When I was looking at SLEC to get stuff cut they said to leave 1.5mm to 2mm break pads which I have done. In the Slider & Buzzard kits he must have had his machine set up so it (mostly) almost cut right through. He had alot of charring & the depth of the cut on thicker parts varied & took alot of cleaning up..

In LibreCad the line thickness can be altered. The lines in LGBRL don't appear to have any thickness, so is it the size of the laser beam that determines the width of the cut? (Short of turning the power right up!)

When I worked on some large flat-bed machines (40 years ago) which used water jets & ultrasonic knives to cut such as leather they had vacuum beds to hold the stuff down. These small laser machines don't do that, so the question is how to hold thin balsa & ply sheets in position & flat.
The honeycomb is aluminium so magnets are out..

Creality have a forum on Facebook so I have logged in to that to see what I can find out.

Fancy printing a glider? Details in the 'tube text - 

or a ducted fan seagull?

For those trying the PP seagull, here's an update re the preferred settings for the controls.

I saw this a few hours ago -  a fellow was sick of the hassle of gluing on wing coverings and wondered if he could lay down the sheet on his 3D printer and print the wing structure on to it.

Short story - he used magnets to hold down the sheet and the printed was usually happy to print on to it.  Good 'stiction'. His printed structure was seriously light weight and the whole model was only about 50g (a conversion of a rubber power for a capacitor and micro motor).  He post-heated the printed structure on a jig to give it the kind of camber he was looking for.  

He tried lots of different wing aspects. Seems like one could design and print a somewhat more beefy wing structure e.g. one which might allow for a CF spar.

There is a rather annoying side-discussion of the laptop he was using but it idea certainly would be interesting to see if one might print on other types of covering....

Not quite the same technique but I have printed all the parts for a wing.
The leading edge box spar showing its shape.
 
It actually printed with the spar face on the bed so the filament direction was along the wing like this.
 
Bed size limitations meant the complete wing was made up of 3 sections.
The rear part of the ribs were printed
 
And were glued onto the rear face of the box spar
 
The complete wing assembled. The centre section included a dihedral angle.
 
The rear of the wing was tissue covered.
My concern was that the printed material is relatively heavy for its strength so I tried to arrange it was only used where its weight had the least penalty although the end result was still 20% heavier than a thin sheet Depron covered wing with a conventional spar.