Aluminum dash, things were learned

[phaxtris]

I havent been doing much metal working worth posting lately, figured this was worth a post

After finally getting my print nc up and running, and having a few projects (wood) under my belt, i figured it was worth giving it a go cutting out a dash (aluminum) for the little single seat airplane ive been working on. I took some dimensions of the existing, instruments, etc and drew up something in fusion.....Now i didnt just hop into cutting the dash out of the limited supply of aluminum sheet i had, cut a foamboard test piece to see how i liked it....looks good!

Ok time for the aluminum, selected a 1f 2mm cutter, 24k rpm and 1000mm/min (100%), tape/glued the stock down and away i went........first problem....i never actually milled the wasteboard in situ, and now that im cutting 1/16 material its a problem, 1/4 the way though....1 cutter bites the dust

second shot, 2f 2mm cutter, 24k, 75% speed, offset the cutter to make up for the high spot....oh well ill just take a couple runs at it.........1/2 way through (half depth) 2nd cutter bites the dust

third times a charm right, try a 1f 2mm again, 24k, 65%, made it the whole program at half depth....except the last 1/8 of the program, that didnt cut at all due to the wasteboard issue

this goes on, i slowly cheat the depth down, getting further and further through......2 more cutters down, ok somethings up, i take a better look at the snapped off bit....plugged up

last go, 1f 2mm cutter 24k 80%, zereod the top waste board as top of material....waste board needs to be cleaned up anyhow.......this time.....wd40, lots of it

Success! only 4 cutters LOL, now i know, must used lubricant, oh well 2mm cutters are cheap and this is 100x better than i would have been able to cut out by hand





Still to be done is the bend just below the wooden sill, and match drill the mounting holes with the original and trace/cut out the curvature to match the cowling

original dash....replacing the tach, swapping the fuel gauge for a sight guage, adding a hobbs meter and running all of the engine instruments through an esp32 w/3.5" display, that will clear up some room for the ipad

 

[Janger]

WOW! Ryan! Wow.

 

[YYCHM]

a dash (aluminum) for the little single seat airplane ive been working on.

Tell us more about this little single seat airplane you have been working on.......

 

[Tecnico]

Nice work!

D

 

[phaxtris]

Tell us more about this little single seat airplane you have been working on.......

I didnt build it, and its wood, i bought it from an older guy in Ontario who could no longer keep his medical, completed in 2006 and has 230 hrs. its a "taylor monoplane", nothing crazy, a slow 80-90mph cruise, 3ish gph burn, 1835cc vw, homebuilt

ive just been picking away at things that i was not happy with and some items need to be addressed while i finish my license and before i give it the ol' college try

some of the metal things ive made
- new seat pan
- new slightly larger aluminum fuel tank (.040 aluminum...fun welding )
- new exhaust headers (still need a 45 to keep exhaust potentially out of the boundry layer)
- new carb heat muff and cabin heat muff
- new carb heat box
- new cabin heat box (never had cabin heat)
- different radio holder
- new aluminum intake pipes
- dash
- new cooling "eyebrows"

some of the non metal things
- stick mounted ptt button
- esp32/3.5 tft engine monitor....waiting on a new batch of MAX6675 chips
- seat back and bottom cushion + upholstery
- nicer fiberglass distributor bump

there are still a few items to address, plus some more annual inspection related things to check on.....i have time, cold weather is coming



and some pictures from the original builder/owner, i dont know how he was able to fly with the seat he had in there

 

[DavidR8]

That’s awesome!
You have more experience with your PrintNC than me.
I’ve haven’t dared to try aluminum but I’m on the verge.

 

[YYCHM]

Where is this being stored?

 

[Dan Dubeau]

Very cool. Learning to fly, and building an ultralight is something I've always wanted to do. Coming to the realization that I'll probably never get to it, but love seeing others builds.

 

[phaxtris]

Where is this being stored?

wings are in a 6x12 enclosed trailer in a storage yard with some of my other junk, the rest of what you see is in my garage in shawnessey, once you take the wings off even a 2 seater isnt all that large

That’s awesome!
You have more experience with your PrintNC than me.
I’ve haven’t dared to try aluminum but I’m on the verge.

thats the first bit of aluminum ive tried, really does work pretty good, just dont forget the lubricant! haha

Very cool. Learning to fly, and building an ultralight is something I've always wanted to do. Coming to the realization that I'll probably never get to it, but love seeing others builds.

Thanks, surprisingly its registered as a normal aircraft (special certificate of airworthiness, amateur built) and not an ultralight, makes those log book hours count

 

[YYCHM]

Are you taking your license training in a stick control aircraft?

 

[DavidR8]

thats the first bit of aluminum ive tried, really does work pretty good, just dont forget the lubricant! haha

How was it for noise?

 

[phaxtris]

Are you training on a stick control aircraft?

yes, although thats not really the concern, what i will need to try and get is some additional training in a conventional gear (tail dragger) aircraft....wich is somewhat difficult to come by as 99% of training done now days is with tricycle gear aircraft...and being a single seat i cant just hire a freelance guy for some dual time

How was it for noise?

not nearly as bad as i thought it would be, i put on some ear muffs assuming it would be ear piercing, and it was a little overkill, it was louder than wood, but not orders of magnitude, defiantly tolerable with light ear pro

 

[YYCHM]

yes, although thats not really the concern, what i will need to try and get is some additional training in a conventional gear (tail dragger) aircraft....wich is somewhat difficult to come by as 99% of training done now days is with tricycle gear aircraft...and being a single seat i cant just hire a freelance guy for some dual time

Where are you training and on what aircraft?

 

[phaxtris]

Where are you training and on what aircraft?

in High river on diamond da20's

 

[whydontu]

Sounds like my experience with my small CNC machine. I’ve had decent results with slow feeds, high spindle rpm, and shallow depth of cut. 5 inch per minute, 12,000 rpm, 0.003” per pass, and a squirt bottle of BandAid cutting fluid. Takes forever, but haven’t snapped any cutters recently (tempting fate with this statement).

Another hint is to run a surface probe mesh before cutting so the cutter maintains a stable depth of cut, even if the workpiece isn’t flat.

Have also had decent result by not doing a 100% through cut, leave 0.005” of material. With aluminum, a few thou is easy enough to cut with an exacto knife to finish.

 

[DavidR8]

I may screw up my courage and use my router to cut the the trunnions for my carbide grinder.

 

[phaxtris]

I may screw up my courage and use my router to cut the the trunnions for my carbide grinder.

common' cnc those baby's, what have you got to loose, a couple cheap cutters and a bit of aluminum? gotta jump some time!

 

[YYCHM]

in High river on diamond da20's

Seriously...... $17000-$20000 to obtain a private pilots license now

Pricing | Kanata

www.kanataaviation.ca

 

[phaxtris]

Seriously...... $17000-$20000 to obtain a private pilots license now

Pricing | Kanata

www.kanataaviation.ca

yep, on average, probably more like 17-24,

if your a superstar and manage to roll through with the min hour's and of course the weather co-operates your probabaly 15k, but the average is more like 60-80 hrs, at 250-280$ an hr for dual, and 180-200 an hr solo it adds up fast

 

[YYCHM]

yep, on average, probably more like 17-24,

if your a superstar and manage to roll through with the min hour's and of course the weather co-operates your probabaly 15k, but the average is more like 60-80 hrs, at 250-280$ an hr for dual, and 180-200 an hr solo it adds up fast

Well that certainly would have been out of my reach. I paid something like $1200 in 1982 to obtain my license and that was a stretch for us at the time.