Spar hole drilling jig
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- Опубліковано 1 жов 2024
- Three methods for cutting a spar channel in a hot wire cut wing core.
MATERIALS
All my building materials and RC gear - newtonairlines....
Knauf XPS insulation foam - www.bunnings.co...
Bulk Depron - www.tradewareho...
Skyshark P4X spars - www.kitesandfun...
New Stuff iron-on film - EZload laminate - www.neopostonli...
Blank ID cards - Ebay www.ebay.com.au...
Newton Airlines blog (Plans) - newtonairlines....
Website - anewton.net
Thank you for sharing your knowledge. I enjoy seeing your videos. Greetings from Pamplona, Spain
Hi Andrew, always good to see your "inventions".
Love it - great idea. In order to hold the wing spar in the wing a little more tight, roll some masking tape around the spar and it will prevent the wings from sliding apart,
Also the spar is re-usable this way. Happy flying. Cheers
Like it. I used an ally tube in a similar manner to cut an additional short spar position in my Phoenix 2000 wings, so that I could break it down quickly for transportation.
Very elegant, that's something I wouldn't have tried because it doesn't seem like it would work.
Try this hot wire slot cutter ua-cam.com/video/vchocobmRl0/v-deo.html
Man, you are a smart designer!
ExperimentalAirlines Thanks Ed. We're having a wet windy winter so I have lots of time to ponder and tinker in the shed.
ExperimentalAirlines Both of you are so great for the hobby.
+ExperimentalAirlines Hello Ed, miss your videos!
Hi Andrew it would be interestig to see how the old kraft paper and white glue covering compares to the laminate film....ie a stiffer wing ?? The 1st time I read about this covering system was an article in the USA Model Aircraft magazine by James (?) St Clair back in the 80's or so...Rgds....Laurie
Please make more Videos like this One again.😃😉
Love this idea. Will definitely apply this method once I finish my wire cutter!
Incredible e
Great idea Thank You for sharing.
Really clever, Just a Q on your soaring videos. Do you often use ballast in your models, if so is there any sort of calculation that can be used to determine how much is necessary? Thanks again
Trouttaranaki No extra ballast, occasionally use a heavier battery if it's blowing hard but mostly not.
Great drilling rig Andrew. Always wondered if that method would work, and you have proved it does...It does require a bit of making, but so what, you only need to make it once right?...Impressed.....Now, I just want to see you skin them in fine glass cloth using a water based varnish...I saw this done recently by some local Students, and even they made it work rather well...!!!...Well done m8...:)
I want to summarize my comments ........
1) beautifully presented
2) You seem to be a beautiful natured person......God Bless
+Zain Hussein Thanks Zain
This is great,thank you. :)
Very nice idea, I guess I have to steal some of my dad's tools to build that jig
don't steal...just kidnap it and ask for money to buy rtf plane haha
Very nice method ;)
That was cool enough to get you a new subscriber. Thank You for sharing.
Great! Using a bent spar one could easily fit a nice dihedral wing as well! (They would need to bevel the top edges a bit to properly meet together ). Thanks for sharing!
Great Job.
Truly a gifted mind. Thanks for sharing. God Bless.
I'm blushing, many thanks
Wow very helpful man thanks this is the part I'm very struggling with 😩😩
What Is the type of foam you're using here?
Check description
Great idea, thanks for the video
Thank you
Hi Andrew have foam cut my wings like on your video , just wondering I was going to laminate the wings with kraft paper and PVA wood glue , there is a video of a fella laminating his wing and claims no spar is needed just the laminate is needed, im a new to the hobby any help would be good, thanks for your videos I have foam cut 4 wings with that stuff from Bunnings
Definitely, if it's not a big heavy model the skin could do the job of spars.
Berry good and intarasting
I like this idea being able to separate the wing later on would make it much easier to transport the aircraft.
I've got to get mine onto the rocket 🚀 ship to Mars.
I've only got so much room next to my chair 💺 as you can imagine.
I'm only taking a couple of bread rolls and some ham and I thought I'd bring a couple of doughnuts to share with the guys on board.
We'll have to grow some vegetables while we're on Mars for our survival.
I think it's going to be a fun holiday.
Wish me luck!
in the beginning of the video you cut the wing, why do you cut at the bottom of the wing too if your airfoil is flat there so you could cut only the upper part? Is the foam plate not flat enough?
Bottom of the airfoil is not flat
Hi handrow great work love your chanal
lovely work, how do you conect both half wind together with dihedral?
Did you not like my previous answer?
Hi Andrew, your cutting jig and spar drilling jig has given me some great ideas for wing making as I have always used depron in the past to make wings. Thanks for the inspiration!!
big5astra It works out much cheaper than depron too.
Flipping brilliant!
Your jig is pure genius. I will have to copy that idea.
Try my idea. Its easy to cut spar hole ua-cam.com/video/vchocobmRl0/v-deo.html
hello Andrew
I have made a tool for this method, however, the carbon drill quickly gets hot during drilling and therefore the foam melts at the front / tip of the drill and becomes hard
in the thinner part of wing, there are holes through the surface you might have a suggestion how to handle this?
Wr Henk
Just have to stop often and clear out the core of foam then go again
Great video as always! Thanks for sharing!
Watching this again. Will probably try this on my vacuum bagged wings.
It's a tricky method to get right, has to be perfectly aligned and use a stiff enough CF tube. But I reckon you have the skills.
@@AndrewNewton I think it's on the really long deep Cuts where it's going to start getting crazy. On my sheeted wings with the vacuum bagging I only need to go in maybe halfway mainly to join the wings together and give them support right in the middle where all the stresses are
Oh yes perfect for that.
Yet another great video!!! Thanks andrew
love your chanel , pls help how do you glue them together? witch glue do you use ?
Either no glue, just tape, or hot melt glue. Can't use solvent glues because they dissolve the foam.
The drilling was the route to go (less messy) But the covering also make's the wings much more stiff but I haven't tried paper and glue like LWJCarroll mentioned.
Graham R Dyer Yes the covering adds a lot of stiffness. I need to do some comparisons to determine if a spar is actually required.
Andrew, Brilliant drilling jig! I'm new to the RC Airplane world and am looking forward to making my own wings. Do you have a good video on how to make the hotwire tool and for shaping the wings with it? Thank you and excellent videos!
I have a playlist dedicated to Hotwire cutting gear and techniques
Hi Andrew just wondering what size carbon tube you are using and where is cheapest place to get them from, thanks
Are the links not working?
My greatest respect and appreciation to you, sir! I've watched a lot of videos on this, and have personally struggled with the spar issue myself. You have, by far, the best methods. Thank you so much for sharing this awesome video!! :) Liked!! :)
+William James Thanks William. Currently I'm testing cutting shallow slots top and bottom and gluing in CF strips with CA. 3 x 0.5mm or 1 x 6mm
Neat! What foam is that you are using? It doesn't look like conventional Expanded Polystyrene
XPS, link below
Great ideas. Seeing your hot-wire template and your positioning of the carbon drill on the end of the wing made me think that using a template with your carbon drill might be an further improvement on an already great technique. This would ensure you hit the exact spot you want to on the end of the wing profile.
Yes that is a good idea.
Very good!
Great idea! Could you build a bit of dihedral into the wing by placing a small block under the wing tip? Then drill the spar.
RCfragmentor Yes, but with this airfoil there is only 8mm of foam above and below the spar to play with so you would risk poking the spar out the bottom.
Great job. But how do you solv it with dihedral?
I use a bent aluminium tube in the join. I have done a video
Andrew, the more I watch your videos, the better they become. To the point, informative and succinct. Many of these rc guys prattle and prattle and say nothing. I have already subscribed.
Thanks Guy, I'm no good at rambling on.
that looks good .
the airfoil rib I put a guide hole for cutting the spar
thanks
Is that lighter than a foam bored armin wing?
About the same depending on the foam board
Good job
Any plans on cutting a delta wing? I can't find any videos actually showing how to do it like you did in the first video.
philaell Might try a tapered Synapse wing, but any time I have tried to build a tapered wing it turns out worse than the straight version.
For the past 7-8 months I've been trying to figure out the best way to drill holes in the wings of the new planes I've bought to add CF tubes, knowing the very high likelyhood of crashing (I'm new to flying RC planes) and then the sorrow of having to by new wings and fuses to repair them. Found your video and BAM the light suddenly went on. Your method is so simple, accurate and effective. Never thought of using the CF tube itself to drill the foam out. Duh, was that a no-brainer. I was going nuts trying to find super long (ie 30") drill bits in various inch sizes that would correlate to metric CF tubing sizes. Damn, I could NOT hit that subscribe button fast enough. GREAT JOB MAN! Greetings from L.A. California!
Thanks Dan, just have to keep clearing out the compacted foam from the "drill"
@@AndrewNewton Hi Andrew, I have a technical question, if you don't mind, with regards to this superb video you've done.. I have several brand new foam planes I bought recently, mostly warbirds and all are still in the box waiting for me to assemble. I want to reinforce the wings, (also elevators, rudders and fuselage) before I attempt to maiden them but I am not sure how to decide what diameter CF tube to use. The wingspans range in size from 1200mm to 1800mm. How to best choose (or calculate) a proper size CF tube to provide added strength? I am not sure what would be too large or too small for any given wing thickness. Also, I am assuming it would be best to have a CF tube placed as close to the LE as possible as that's where the impact would most likely happen on the wings. The nose of the fuselage would also be subject to impact as well but for now I'm just trying to focus on the strengthening wings first with hopes to keep damage to a minimum. I also plan to apply blenderm tape to the LE to have a nice firm "seal" on the foam. Obviously the exact placement of CF tubes will vary due to the design differences of each wing. All I am trying to figure out now is how to decide what CF tube "diameter" to use, ie 1/2 the wing thickness? Less? More? Note this would be in addition to the factory wing spar which typically does not run the entire length of the wing. I plan to add these CF tubes to run from close to the wing tip all the way to the wing root. I am not worried too much about the minimal weight that this would add. Thanks for any insight. Greetings from Los Angeles!
Oh really good idea , .
Neat trick Andrew, well thought out --- 10 *s --- Many thank's
+loonypics Thanks loony
Excellent man. Excellent. You really design some great tools and toys. Kudos Andrew.
SnapPunch Robert Thanks Robert
Fantastic concepts.
I just recently rigged up something similar using clamped down sheet metal (24"×36"), magnets, two 36" L-angle irons (as guide tracks) and a Dremel with a router bit to cut spar channels into thirty 1/2" thick blue foam ribs. Intend on using shear webs in between the spars.
Really liked the idea with the drill and carbon fiber tube.
Oh yes I like your idea with the Dremel.
@@AndrewNewton
Thanks Andrew!
Yeah, the router makes quite a mess but I figure that's why somebody invented the infamous, "Shop•Vac". Cuts are quick and clean once vacuumed all up.
Wow! You are really a man of knowledge.
Thanks for sharing this.
You Are Amazing!!!
How would you use this with a solid spar cylinder? I am using smaller 5mm rods as a spar for a relatively lightweight aircraft.
I don't really want to glue anything, so is it required to glue it in a Hotwire cut hole?
Could just cut a slot in the bottom and tape it in.
Alright. Thanks!
Mother is the invention of necessity. Or was it the other way around. Ingenious.
Inventors certainly need a mother, thanks
Golden, great job.
Looks easy but you make it so -
Q - is there a cutting edge on the rod end if so how...joe
Yes I just filed some small V notches in the end
Nice work i liked the 2nd method
And how do you know exactly where to put the tube in the wing ?
Right in the middle of the thickest part
@@AndrewNewton thank you so much
@@AndrewNewton nice work
Thanks Andrew. has been thinking about it for weeks. I got stuck at your first option.
+SsoulBlade That method works well for thin and swept wings, need a thick straight wing to drill the holes.
Hey Andy, using the shaft to drill the spar how did u prepare the tip to assist in cutting the hole? i.e. a glued on metal bit perhaps?
+Steve W Steve, I just cut a few V shaped slots in the end with a hacksaw, that's enough to chew through the soft foam.
+Andrew Newton Thanks Andy, ''ll give it a go as soon as I've cut a few wings following your previous instructions...fyi am using 32" Beman Carbon Flash 630-14 shafts.. small and light
Very nice. Would work equally well for making wiring channels. Sweet =)
***** Yes it would, didn't think of that.
Awesome - thank you!
Glad you liked it!
Curious.. have you experienced any RF interference with the CF spars in your wings?
Not that I'm aware of, most of my receivers have two antennas so one is always clear.
Hello, I am following you from the Middle East Your work is creative and wonderful
Hello and many thanks
Andrew Newton 🤗
Hey I want to builds a foam cutter could you let me know how?
Frank R. Pilot Have you seen this upload from 3 weeks ago? ua-cam.com/video/JIRzQO4F8ck/v-deo.html
What diameter carbon rods did you use?
7.5mm P4X Skyshark spars
@@AndrewNewton thanks andrew..i love all your videos...do you have full build of insulated foam mini arrow with electronics and maiden flight?
Yes
@@AndrewNewton can you share the link?
newtonairlines.blogspot.com/2020/11/how-to-find-stuff-on-my-channel.html
Great technique.
This works nice. Great work
thank man for giving idea u have super brain
Ha, not really but thanks
I've been wondering how to do this. Thanks Andrew!
👍 super Video 👍
Thank you 👍
Youre a clever man!
great video again mate. thank you.
I was just contemplating how to do this myself.
Just have to figure out how to make that jig now..
How do you adjust height of spar?
Kevin Ray Rough and ready adjustment by more or less packing under the drill and between the jig base and the work surface
OK. mate thank you.
should try to have spar in thickest part of wing, right?
Kevin Ray That's ideal place for the spar due to the foam thickness, but it doesn't have to be there.
excellent
can you share what type of foam are you using, if I have search what is the starting point
appreciate your help
Yes I use Knauf brand XPS insulation foam (probably only available in Australia). Same as Blue or Pink modelling foam. You could practice with polystyrene packing foam but the XPS is stronger.
+Andrew Newton thank you sir, I try to find the foam but my luck ran out, the only foam I can find the packing thermacol, which is not very strong, any chance if I can use the same and use something to harden it out
I leave in Dubai (UAE) and nothing of this is available
appreciate your guidance
Extra layer of packing tape or iron on covering would do the job. Maybe use balsa correx (corrugated plastic board) for control surfaces
+Andrew Newton thank you, will give it a try today and let's see the result
just one thing, I did not get the point of ironing, if you can elaborate a little more
I was referring to document laminating plastic that you apply using a warm iron. It's an alternative to packing tape covering.
Make the hole first and then cut the airfoil!!!! : )
+Skycharly Never thought of that but it might be the best solution. Would have to accurately position the template around the hole. Thanks Skycharly
+Andrew Newton
My template has the hole. I fit the rod, leave it sticking out, and then the template Cheers!
Skycharly Excellent thinking here. This would potentially make dihedral much easier to achieve too. I might give it a try tomorrow. Thanks - Dave
andrew, what did you put at the tip of the cutting spar?
Just cut teeth into the end
I tried several times, but still struggling to get perfect straight hole.
@@koperaljali3253 If you haven't tried it yet, bore the hole(s) first. Then use the holes on each end to line up the hot wire airfoil guides and cut the airfoil.
Is it just wood that you use for the wings?
Insulation foam. XPS or expanded polystyrene. All the info is in the video description
Andrew Newton thanks!
Excellent. Thanks.
Tricky to setup but it does work well
the best jig designer .
A good jig works wonders
How can we make the hot wire bow? Please help
More info here newtonairlines.blogspot.com.au/2015/07/hot-wire-foam-cutting-rig.html
Andrew Newton please make a video like your other videos. Thanks
ua-cam.com/video/JIRzQO4F8ck/v-deo.html
dude i love your stuff
Excellent, glad about that
Interesting lesson