HorizonHobby.com Shop our Airplanes Products Shop our Surface Products
Thread Tools
Old Apr 13, 2015, 07:41 PM
AvB is offline
AvB
Find More Posts by AvB
AvB
Wind, hill, ... I'm keen ...
AvB's Avatar
Australia, QLD, Woody Point
Joined Nov 2006
5,088 Posts
Recently Justin from Vermec dropped around to do a couple of tweaks to the setup of the machine, the most significant thing being to change the dipswitch settings for the Gecko drives to match more recent recommendations. Now I’m not the CNC technical guy but I understand that one outcome was to reduce the tolerances that the drives were trying to achieve, which were set at ridiculously high levels (laymans explanation). It took a very good light and magnifier and a tiny screwdriver and an aching back to get the switches reset, but on restarting the machine the effects were instantly obvious. It was so quiet!

Previously when sitting idle, the big servo motors chattered and grumbled quite loudly, arguing with themselves about which microscopic increment to sit on. It was really quite noisy. Now at idle, it’s virtually silent.

And having done some 2D work making signs and things recently, it seems to be moving more smoothly and rapidly. Nice.

But it’s important to make sure that it hasn’t lost any of its high accuracy, so I’m doing a test 3D cut, using the Angry Bird stabilizer shape. It was rough cut first and then the finish cut (shown in video) is being done with a 4mm flat end mill at an 0.3mm stepover. So far it looks perfect and is running smooth and fast, although I keep the speed down a bit as I suspect the higher speeds are more likely to lead to data jam-ups. I often don’t bother with the vacuum for finishing cuts as it’s not cutting out a lot of material, there’s no dust (only chips) and it’s so much quieter without the vacuum. Occasionally I go out and check it and hand-vaccuum it clean.

The other thing is I’m planning to change over to Mach 4 soon. Development is completed and it’s selling, and it offers a lot of improvements compared to Mach 3 - much faster processing, more responsive and so on. The only thing is that to achieve the degree of change required, it now uses a totally different system so you can’t just import your old Mach 3 settings … you have to set up Mach 4 to the machine from scratch - but Justin is keen to come around and do it as it will be his first Mach 4 setup.

The other problem with Mach 4 is that the plugin for the Warp 9 smooth stepper is still in development, and progress seems to have stalled - and they don’t reply to email queries about it. It’s quite likely that the beta version will work fine, but we won’t know until we try. Thing is it’s not a no-return decision … you can always just go back to Mach 3 if it doesn’t work.

Either way, the machine is nicer to use since the recent tweaks.

Test cut after Gecko drive changes (0 min 25 sec)
AvB is offline Find More Posts by AvB
Reply With Quote
Sign up now
to remove ads between posts
Old Apr 13, 2015, 09:13 PM
AvB is offline
AvB
Find More Posts by AvB
AvB
Wind, hill, ... I'm keen ...
AvB's Avatar
Australia, QLD, Woody Point
Joined Nov 2006
5,088 Posts
Pretty incredible result really. Probably the smoothest ever, or certainly as good as. None of those occasional fine stripes. Edge is really sharp too. Nice. This is straight off the machine - no sanding or polishing.
AvB is offline Find More Posts by AvB
Reply With Quote
Old Apr 13, 2015, 09:46 PM
Ezza is offline
Find More Posts by Ezza
DS= -$ & :-)
Ezza's Avatar
Byron Bay, Australia
Joined Feb 2006
3,281 Posts
Beautiful, congrats AVB! Looks so smooth!
Ezza is offline Find More Posts by Ezza
Reply With Quote
Old Apr 13, 2015, 09:51 PM
ALEX HEWSON is offline
Find More Posts by ALEX HEWSON
Remember... Fly for fun!
ALEX HEWSON's Avatar
Christchurch, New Zealand
Joined Jul 2005
6,494 Posts
Fantastic mate!
ALEX HEWSON is offline Find More Posts by ALEX HEWSON
RCG Plus Member
Reply With Quote
Old Apr 13, 2015, 10:33 PM
Larrikin is offline
Find More Posts by Larrikin
Everything's A Compromise
Larrikin's Avatar
Joined Jan 2005
1,934 Posts
Very cool, Andrew

A testament to having moulds milled is how quick the Rubicon came together.
Now ... just need to figure out milling fuselages

D.
Larrikin is offline Find More Posts by Larrikin
RCG Plus Member
Latest blog entry: The Rubicon
Reply With Quote
Old Apr 14, 2015, 06:07 AM
josh18 is offline
Find More Posts by josh18
608 km/h!
josh18's Avatar
Australia, QLD, Toowoomba
Joined Jan 2010
4,129 Posts
Nice one Andrew
josh18 is offline Find More Posts by josh18
Reply With Quote
Old Apr 14, 2015, 06:25 AM
AvB is offline
AvB
Find More Posts by AvB
AvB
Wind, hill, ... I'm keen ...
AvB's Avatar
Australia, QLD, Woody Point
Joined Nov 2006
5,088 Posts
Dave, there's no issue with milling fuselages - but the challenge is milling them with filleting/ fairing included. It's a combination of good CAD drawing which looks good and achieves the aerodynamic aims, whilst being millable on a 3-axis. Geoff's having a look at one now and we hope to have a crack at it before long.
AvB is offline Find More Posts by AvB
Reply With Quote
Old Apr 16, 2015, 06:02 AM
mrmick77 is offline
Find More Posts by mrmick77
Registered User
Australia, WA, Perth
Joined Mar 2008
289 Posts
If its easier mate do the fairing as its own part and glue it on later. That way you can fiddle it to suit your taste and if its not right its not a whole fuse or wing mould.
mrmick77 is offline Find More Posts by mrmick77
Reply With Quote
Old Feb 06, 2016, 11:24 PM
AvB is offline
AvB
Find More Posts by AvB
AvB
Wind, hill, ... I'm keen ...
AvB's Avatar
Australia, QLD, Woody Point
Joined Nov 2006
5,088 Posts
I spent the morning dusting off, oiling and prepping the CNC machine. I'm expecting to get busy soon on some projects for our local builders/ designers and I just hope I can do a good job.

When I booted things up, the darn screen wouldn't come on - the one for the computer that runs Mach3 right next to the CNC machine. Just "No Signal". Switched things on and off. Unplugged and preplugged leads. Tried a new DVI lead. Pulled the computer box apart and vacuumed/ brushed it out ... there's no graphics card on the board so I couldn't clean the contacts. Rang Geoff S in desperation too. Tried another screen. Nup. I started planning to visit the computer guy tomorrow knowing that I'd probably be up for a new motherboard. Sigh.

Back in the shed after the ritual Sunday scones and beverages with the grandparents, I was disconnecting the spare screen glumly, questioning whether I'd missed anything, and just wondered if a good jolt might help. Now I have to say usually at this point when I have such bright ideas, I do something I later regret. Anyway, I lifted the computer box off its mounts and just dropped it an in inch or so onto the concrete. Bang. Felt good. Did it again. Turned it upside down and banged it a couple of times again. Sat it back in place, turned it on, and the screen happily did its thing. Ran the machine and tested things. All OK.

What a weird life.
AvB is offline Find More Posts by AvB
Reply With Quote
Old Feb 07, 2016, 12:15 AM
Larrikin is offline
Find More Posts by Larrikin
Everything's A Compromise
Larrikin's Avatar
Joined Jan 2005
1,934 Posts
Quote:
Originally Posted by AvB View Post
I lifted the computer box off its mounts and just dropped it an in inch or so onto the concrete. Bang. Felt good. Did it again. Turned it upside down and banged it a couple of times again.
That's not something I would have thought of, Andrew.
Go you
I would have ended up paying for a tech to fix it.
Larrikin is offline Find More Posts by Larrikin
RCG Plus Member
Latest blog entry: The Rubicon
Reply With Quote
Old Feb 07, 2016, 03:45 AM
timbuck is offline
Find More Posts by timbuck
Nothing is easy
timbuck's Avatar
gold coast australia
Joined Aug 2008
6,252 Posts
Funny story Andrew glad you found it . It can be fickle finding gremlins in electronic.
Dad has had similar a few times over the years with people bringing computers in not working and after the rough Kyogle roads , plug them in and they work fine....client goes home scratching head , plugs it in and it doesn't work.... Back to dad's not working again etc it always a smile plug dusted up or loose.

Looking forward seeing the new projects come to life , and I'm sure you will do a great job
timbuck is offline Find More Posts by timbuck
RCG Plus Member
Latest blog entry: More colours
Reply With Quote
Old Feb 07, 2016, 05:42 AM
AvB is offline
AvB
Find More Posts by AvB
AvB
Wind, hill, ... I'm keen ...
AvB's Avatar
Australia, QLD, Woody Point
Joined Nov 2006
5,088 Posts
Decided to swap that touch screen to an older basic screen I have, as it's possible that the touch screen could be responsible for those mystery stops I have had regularly. Long shot, but worth a try. And although I thought it would be a good idea when I bought the machine, I worry about the touch screen because touching something by accident could stuff up a run.
AvB is offline Find More Posts by AvB
Reply With Quote


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion AVB has met his match Aerogance Dynamic Soaring 15 Dec 02, 2013 12:14 AM
For Sale AVB Force Feedback Streering Wheel edessa Non R/C Items (FS/W) 0 Dec 10, 2006 10:28 PM