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Oodalally - Build Log

Using home-made Laser Cutter

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Geoff Gardiner03/11/2019 12:36:56
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OK, so here we go with another build log!

I wanted something that would be suitable to take a 'B' test with and also something that would be a good first model to build using my Home-made laser / CNC cutter.

My first thought was The Ohmen, but decided on the Oodalally as it is a bit larger. Also, I have some 4s batteries that need a good home.

Having obtained a PDF version of the plan, the first job was to trace out all the parts that I would be laser cutting. For this I used a program called InkScape.

1.jpg

Each part was created on a separate layer, this makes it easier when you create the cutting files later.

2.jpg

Next, I created a new document in InkScape and set the page size to a sheet of balsa. Then I copy all the parts that will be the same thickness and lay them out on the page. I then produce a cutting path and using the J Tech Photonics laser tool (a 3rd party extension that I installed into InkScape), I produce the g-code file.

3.jpg

More later...

Geoff Gardiner03/11/2019 12:52:13
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The g-code file is the loaded into a program calles CNCjs which controls the laser cutter.

cncjs.jpg

And the job is set going.

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And in next to no time we have this...
img_4482.jpg

More later...

Geoff Gardiner04/11/2019 17:25:35
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727 photos

Cut the fuselage sides and glued on the ply doublers today.

Also made a start on the wings.

img_4483.jpg

img_4486.jpg

More later...

Peter Miller04/11/2019 18:14:13
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Looking good. That laser cutter sopunds a great time saver.

christophe dauvergne05/11/2019 15:53:35
8 forum posts

Hi

do you have a file of manufacture of your laser machine that interests me strongly the section mechanical and electronic

regards

christophe

Geoff Gardiner05/11/2019 20:46:59
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418 forum posts
727 photos

Hi Christophe.

I built the machine myself, printing parts for it with my 3d printer. See here for details.

It also will hold a dremel for milling jobs - ideal for cutting thicker ply.

The laser unit is a 5W diode laser from BangGood.

Hope that helps.

Geoff Gardiner05/11/2019 22:15:17
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418 forum posts
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Bit more done on the wing today:

img_4487.jpg

img_4488.jpg

img_4489.jpg

More later...

Chris North 306/11/2019 04:58:46
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315 forum posts
512 photos

Looking good Geoff. I love the idea of a laser but just not sure I would get much value out of it given the amount if building I'm doing. Following your build

Geoff Gardiner06/11/2019 10:11:08
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418 forum posts
727 photos

Thanks Chris.

I wondered that myself, which is why I built my own laser. Even if I don't use it much, I have had a lot of fun building it and getting it to work.

kc06/11/2019 11:25:39
6076 forum posts
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For those who don't want to spend time and money making and sorting their own laser cutter you can of course buy laser cut parts from Sarik!

 

Edited By kc on 06/11/2019 11:26:17

Peter Miller06/11/2019 11:38:11
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Or you can sit there with a power fret saw and a scalpel and cut your own out.

Torsten Spitzner06/11/2019 12:50:33
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Posted by Peter Miller on 06/11/2019 11:38:11:

Or you can sit there with a power fret saw and a scalpel and cut your own out.

And that we call 'scratch building'...

Geoff Gardiner06/11/2019 13:02:28
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418 forum posts
727 photos

Very true KC, but where's the fun in that wink

Steven Shaw06/11/2019 13:50:50
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333 forum posts
182 photos

I'm just finishing up scratch building a set of ribs for my Lil' Cub, just some holes to cut. It took most of the afternoon to cut 26 ribs so far, but I enjoy the time spent at little jobs like this.

cub ribs.jpg

Geoff Gardiner07/11/2019 15:17:47
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418 forum posts
727 photos

Bit more on the wings:

Sheer webbing going on

img_4490.jpg

Leading edge.

img_4493.jpg

The rest of the wing sheeting.

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Second half of the wing under construction.

img_4496.jpg

Sheer web going on the second wing half and L.E. cap strip going on the first wing half.

img_4499.jpg

More later...

Peter Miller07/11/2019 18:14:52
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10310 forum posts
1231 photos
10 articles

Looking good!

Geoff Gardiner07/11/2019 19:09:10
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418 forum posts
727 photos

Thanks Peter, so far so good.

Geoff Gardiner08/11/2019 12:18:08
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418 forum posts
727 photos

Adding the cap strips.

img_4500.jpg

Joining the wing halves.

img_4502.jpg

I added the wing tip to the first half of the wing before joining - really must tidy the bench!

img_4501.jpg

More later...

christophe dauvergne09/11/2019 13:58:46
8 forum posts

Hi

very good job 👍

i will make one as soon

have you got the file to put the laser diode

regards

christophe

Geoff Gardiner10/11/2019 13:21:37
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418 forum posts
727 photos

Hi Christophe.

I will send you the file when I am next on my other computer.

Are you going to do a build log?

Geoff...

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