so my dad and i were figuring out the cog on my f22 and we decided to look up what a store bought cog balancer looked like so i could design one in sketchup.
needless to say it doesnt look anything like the one we saw but, i think it will work just the same.
we havent cut it out yet so there is no pictures but, i might post some sometime.
there is no glue required except to glue the triple layers together.
this makes it easy to take apart and store it.

here is the sketchup file.
you are welcome to change it and make corrections where you see needed!
enjoy! Attached files plane cog balancer.skp (851.9 KB)Â

 

I cut this out, it is set up for green FFF (ours is .2" thick) and a 1/16 bit. There are some issues, first is the tabs aren';t long enough so the panels were getting loose and jaming Rosie. Second, something is up with the trianglular parts. 2 of them cut fine as normal, the other four cut crazy, jumping all over the place. they finally did cut out fully, just took longer and the edges seem not as nice.

I know some of you know the answer to this problem, so feel free to chime in.

Otherwise, I am sure Alex will put this together tonight and give a report.

 

Your problems are probably caused by flipping the part with phlatlines already applied. Check this thread for the discussion: viewtopic.php?f=100&t=1863&p=18337

The following pictures are screencaps from the free version of NCPlot software: http://www.ncplot.com/ncplotfree/ncplotfree.htm Check the last picture for the fix. You can only fix it by flipping back, if all cut lines are bad. Otherwise, you fix some and the good ones now go bad. Redoing the phlatlines should work every time. Attached files

 

Awesome Kwok, Thank you! I will make sure Alex gets this too!

As a side note, my NCPlot v1.2 shows the iso from a different corner. hmm

 

Oh? I remember I had all the tabs disappear on some parts if I moved the part after applying the tabs, but I thought that had been fixed so I didn't bother mentioning it. I guess flipping a part creates the same issue, so the resolution is to never move, flip, bend, fold, spindle or mutilate a part after any Phlat-lines have been added.
btw, what I do now is completely delete all Phlat-lines from the entire file if I need to reposition anything, then re-apply everything when the parts have assumed the position, so I KNOW they will all be cut.

Kwok, how did you know that Bert had flipped those parts? Is there a history log attached to the skp file?

 

Aww Dennis, surely you don't mutilate any parts do you?

 

No Sir, I do not!
But I am consistently unable to prevent the unfortunate consequences of unpredicted gravity storms.

 

You can rotate it, you know.

 

Check that thread, I posted a link to. Even posted a video there, that is worth watch. I've just seen this before, the work of a serial flipper. Let's see if there is an admission of guilt?

 

im not quite sure what i did or when i did it or how i did it or any of that but whatever i did it apparently wasnt good.
i prolly flipped some things or moved them or whatever while i was trying to get everything on just two sheets of foam . :|
but i guess it worked since dad got it cut out.

 

So the lesson for us newbies, place all parts, then apply phlatscript.

@Dennis, we do not have any gravity storms here, instead the ground just jumps up and grabs the unsuspecting.

 

the ground isnt very nice sometimes

 

sorry i haven't gotten around to posting pics of the balancer, i have no idea where my camera is
BUT!
i have the files for blue foam.
its a lil different than mine is but its pretty much the same.
if you build it could you do me a favor and post pics for me?
thank you! Attached files plane cog balancer blue1.cnc (20.1 KB)Â plane cog balancer blue2.cnc (11.3 KB)Â plane cog balancer.skp (502.8 KB)Â

 

hey ToxicToast, how'd that cut file work out for you?