file Question Looking to buy a D420 for RC Planes

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21 Nov 2021 18:45 #61666 by Slackboy
Looking to buy a D420 for RC Planes was created by Slackboy
Hi,

I'm David and like the title says I'm thinking of getting a D420 for building RC planes. I'll be milling balsa and ply and very occasionally aluminium. Maybe one day i'd get the laser head as well.

I think the spec i'd like to go for is using UCCNC via a ethernet connection, with a MM1000 DI. I'd also like to automatically trigger the dust extraction.
I'm a bit confused about how and where all the connections would go? Do I need the switch box, 2nd layer module and two SE2300?

It would be good if Stepcraft had connection diagrams somewhere on the website showing how things went together - or have I just missed them?

Thanks for any help
David

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24 Nov 2021 09:16 #61670 by CNCMiller
Replied by CNCMiller on topic Looking to buy a D420 for RC Planes
Hello David,

A D420 is ok for RC plane building only think twice on how big your planes will become in the future and if a D420 is than still suitable.
You want to use UCCNC (I personally don't use that) that's ok but I don't think Ethernet control is wise.
If there is a hick-up in the connection your work is destroyed.
The same as controlling the vacuum dust extraction, why automatic? You are at the machine to set the X-Y zero point and start the milling process. So what is the problem to switch the vacuum cleaner on?
And it is not smart to leave the machine unattended while milling a job, especially in the beginning when you are learning the process.

The SE2300 is good investment for the spindle, its saver and the spindle starts / stops according to the codes provide by the post-processor in the G-code or/and commands from the UCCNC software.

SC 1/420 + Gantry extension, Kress 1050 FME-P, NeJe 20W Laser, WinPC-NC USB v4.00, Vectric Aspire 9, SolidWorks 2021

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24 Nov 2021 19:46 #61674 by Slackboy
Replied by Slackboy on topic Looking to buy a D420 for RC Planes
Thats a really helpful reply - thanks for taking the time to do it.

Why does an issue with ethernet cause issues? Wouldn't you have the same problems with USB?

I do agree about the extraction. Why spend the money on automated control when you're stood next to the machine anyway.

Lots to think about, thanks.

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26 Nov 2021 10:50 #61685 by CNCMiller
Replied by CNCMiller on topic Looking to buy a D420 for RC Planes
" Why does an issue with ethernet cause issues? Wouldn't you have the same problems with USB? "

You have a point here.
When loosing the connection whatever the course is your work is almost always ruined.
But I find that USB is more stable than an Ethernet or a WiFi connection. But its completely your choice.

Don't think a milling machine works the same as a 3D-printer, just start a job and come back after a few hours.
Yes the controls are almost similar but the rotating endmill is a killer, it can ruin your machine and even worse.
Do not underestimate the force the spindle create.

SC 1/420 + Gantry extension, Kress 1050 FME-P, NeJe 20W Laser, WinPC-NC USB v4.00, Vectric Aspire 9, SolidWorks 2021

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