Comments sought on new build: A CNC Router for RC Gliders and Planes

[JAZZCNC]

Dean, the plan is to put a second floor of 18mm ply screwed to it and then bolt the machine through the floor and into the base which has 12 4" x 4" posts concreted into the ground.

Ah Ok that sounds a good plan I'd hate for you to tip your new shed over on first job. . Lol

Michael Marino has his machine in similar sized shed which is super organised with shelf's etc and I remember when took it up to him saying about machine shaking shed and stuff falling off. . . . He'd only had crappy merchant dice snail before this machine and think he thought I was joking.!! . . . He soon realised I wasn't when it tried to walk off the bench and out the door. . . Lol . . . . . And that was at half it's capable speed.!!

That machine and gantry was half the size and weight yours will be.!!!!! . . . . Fasten it well.. .Lol

[njhussey]

Ordered one lot of linear rails 1190mm long with 8 blocks on Thursday night, they arrived from Korea today at 8.45am......that's fast...straight through and no stopping at customs (if you know what I mean ) These I'll cut into two lengths, one 750mm long for the Y axis and one 420mm long for the Z axis. Ordered the ballscrews from Chai today so waiting on one more lot of linear rails (1390mm long for X axis) and the ballscrews and then I can start the build in earnest!

[Wobblycogs]

The shed's looking good as are the rails. I got stung for fifty quid and a two and half week delay with the rails I imported, I obviously don't have any luck at the moment.

[njhussey]

I was lucky, not complaining as I've always had the fee (which I don't mind as it's the law) on imported stuff so a bit of a change. You got your steppers and drivers yet? Which ones you going for? I was thinking of the Leadshine AM882 from Zapp and the Nema 23 3.1Nm stepper motors from cnc4you...plus looking at making my own (gulp...) PSU.

[Wobblycogs]

Erm, snap on all items (even where I was planning on buying them) . From what I've read they seem like a good combination of parts. I'd probably have made some purchases by now but I've been looking into getting one of these PMDX-107 for spindle control. I doubt I'll set up spindle control straight away but if I can order the part at the same time as the BOB that would be good. I take it you've seen this thread about building a PSU?

[njhussey]

Sounds like yours and my machines electrics will be the same I was going to look into the closed loop system but for what I'll be using it for I couldn't really justify the extra. I've also been looking at that as I was wondering if I could use the PWM output to control my RC Speed Controller which will be powering my spindle. Sounds like some combined purchases could be made here!!! Yes seen a few threads, I'm fine mechanically but anything electrical leaves me cold...

[Wobblycogs]

I own a soldering iron and I even switched it on once...

I'm actually quite interested in the electronics I just don't really have time to learn as much about it as I would like. I think I'll probably build the PSU as it's only a dozen or so components, more complicated magic will have to wait.

If you want to get together for a brain storm on the electrics or to put together a combined purchase just give me a shout.