All your foam cutting vids really helpful! I'm going to change mey present, cumbersome bow to your model, and rejuvenate my interest in building foam wings/aircraft. Diolch yn fawr from Wales, Andrew!
0.3mm thick, used for window flashing. Available in small rolls from hardware stores. www.bunnings.com.au/consolidated-alloys-150-x-0-3mm-x-10m-weatherflash_p1100453
Thank you for showing us how you use templates. Can I ask what type of foam you use, and from where do you get it? I am having problems sourcing suitable foam here in the UK.
Hello Andrew - Many thanks for this wonderfully put together video. I went to Home Depot and could not locate the metallic material shown at the 2:02 mark of this video (I think you referred to it as window flashing). Can you please provide a link to where you get it from? I will see if I can find it locally. Thank you.
Many thanks. I've tried both Home Depot and Lowes and no luck. Not saying they don't have it, just that I don't know what its called. I showed the customer service representative the video and he didn't recognize it either. Even if you can find the name, or a packaging label, that would be of great help. Many thanks Andrew, and again, keep up the great job on your videos! Look forward to watching more :)
+William James This is the stuff www.ebay.com.au/itm/Aluminium-Flashing-Metal-for-Timber-Roofing-By-Meter-150mm-wide/301534175503?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20140106155344%26meid%3D7be9d6b5b77748c48da097d8c9e0c490%26pid%3D100005%26rk%3D1%26rkt%3D5%26sd%3D291385089762
Hi Andrew! Finally made myself a hotwire cutter and getting down to business..... SO! The Clark-Y: Ever notice how the bottom surface is not meant to be horizontal? (according the the schematic the nose is pitched down a bit) Which leads me to ask - Do you just mount your home-made "clarky's" (lol) flat at zero degrees, or do you go to the trouble of tilting them at the angle they were meant to be - and if you have, did you notice any big improvement in lift/performance Vs the horizontal mount? (knowing you, I'd bet you tried both ways ;)
hi andrew good tip using alufoil for templates thats the same way i made the wings of my first plane but i did got zapt by electricty by touchen the templets while cutting the airfoil... lol i'm trying out the KF 1 and 2 step wings on my newest gliders, did you ever try them out?
Great video. Question please: When attaching the templates to the ends of the foam, how do you maintain exact parallel between the two? Seems to me that if I attached one template a centimeter (or a few millimeters) above or below the opposite template the wing would be cut out crooked? I didn't see in the video how you ensured that both templates were mounted exactly opposite each other. Thanks very much for the information. Great channel. New subscriber!
nice video, I got some 50mm knauf foam, its quite expensive ($26) in NewZealand and wondered if you can get two wings out of one slice one on top of the other, seems like a lot of waste?
Hello Andrew, thanks for sharing!! I'm following your videos from a while and I found them really useful, thanks for the tips. I have one question: The wing profile as you showed at the begin of the video, have some convex shape in the bottom (below from 0, or below from wing edge). I assume that to mount the wing in the fuselage, you have to shape the fuselage with the shape of the wing, to keep the edge of the wing (cero line) aligned to the edge of the plane. Please, could you confirm my assumption? My question arise because I used to mount my foamboard wings in my square fuses... obviously, my square fuses doesn't have any cavity to hold the wing. Also my foamboard wings are really simple. As you mentioned... hotwire is the next step! Anyway, thanks for sharing your work and keep doing like this. Kind Regards from Argentina (sorry for my bad english)
+Juan Gabriel Vazquez You are correct Juan. Often all it takes is one small piece of foam under the trailing edge, or you can cut the shape into the fuselage.
I have just built my hot wire cutter. Now, in case I use a flat bottom foil, may I align the bottom of the template with the bottom of the foam block in order to not to have to cut the underside?
Hello what program you use to choose the profile and print it on size chosen, and what type of plate you use to cut the wing, here in Brazil we use the isotope p3. thank you...
I know its an old video but how do you ensure both ends where the temlate goes are paralell ? Also how do you put both templates exactly the same place ?
how would this work with a flying wing? such as the ft arrow the centre airfoil template would be different to the outside, what is different? the legnth of the template?, do i make the outer template i identical im really struggling
The outer template starts off as a scaled down version of the inner airfoil but then it is thickened at the trailing edge for strength. You could keep it simple and use the same inner and outer templates for a wing like the ExAir Synapse
Hi Chris, that's right. But you can measure up from the bottom of the foam and make accurate marks to line up with. Might do a video to explain it better.
+fpvZeroo My wife gave them to me so I asked where she found them. Here is her answer. The pins are called “T-Pins”. They are used by knitters to stretch out and re shape washed shawls and lace work. They come in packs of 50 They are made by a company called Knitter’s Pride (USA) Outside of the USA, the company is known as “KnitPro”, so when google searching, you may find links to both names. I buy mine from Handsome Fibres here www.handsomefibers.com/Knitters-Pride-T-pins_p_216.html But search in other knitting suppliers Like Webs here www.yarn.com/product/knitters-pride-t-pins/ LoveKnitting here www.loveknitting.com/knit-pro-t-pins Deramores here www.deramores.com/knit-pro-t-pins-pack-of-50
Hi Andrew, Thanks for the detailed clarification on the airfoils setup. I have attempted my first 2 wings but am getting a concave leading edge,laterally. I'm using a 3S battery and the SS 7 strand wire. (Found this on Bay www.ebay.com.au/itm/320720054185?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT ) Travelling slowly with the pull through but probably not slow enough. I'm taking about 30 seconds for the cut. Your video seems to indicate your cuts are faster than this... I'll try a 4S battery but am wary of the additional heat on the foam and cut through. Any suggestions would be welcome?
+rustyact01 Sounds like too much drag and bowing of the wire. That's why I increased the voltage to 16v (4S) I'm using 90lb (40kg) wire and stretching it as tight as possible with out breaking the frame. I suspect your wire would not take 16V and lots of tension. Also depends how long your wire is too, mine is about 800mm between the aligator clips. I'll get back to you about cutting time after my next wing.
All your foam cutting vids really helpful! I'm going to change mey present, cumbersome bow to your model, and rejuvenate my interest in building foam wings/aircraft. Diolch yn fawr from Wales, Andrew!
Croeso Denis. Hope Google translate did that correctly.
Spot on, and so courteous! One question ,And, - what thickness is the ali for the template , or is it a 'borrow' from and old oil can, or something!?
0.3mm thick, used for window flashing. Available in small rolls from hardware stores. www.bunnings.com.au/consolidated-alloys-150-x-0-3mm-x-10m-weatherflash_p1100453
Thank you for showing us how you use templates.
Can I ask what type of foam you use, and from where do you get it?
I am having problems sourcing suitable foam here in the UK.
+Mel Jones Thanks Mel. It's linked in the description
+Andrew Newton Sorry Andrew just didn`t look at the comments, thanks again.
Awesome video.
As always, Great video. always look forward to your build videos, How to videos and of course your flying (both motored and un-motored)
- - Peace.
+Robert Hatalla Thanks Robert, peace is a good idea
Hello Andrew - Many thanks for this wonderfully put together video. I went to Home Depot and could not locate the metallic material shown at the 2:02 mark of this video (I think you referred to it as window flashing). Can you please provide a link to where you get it from? I will see if I can find it locally. Thank you.
+William James Hi William, I have never had to buy it, I inherited a big roll so I'll have to do some research and get back to you.
Many thanks. I've tried both Home Depot and Lowes and no luck. Not saying they don't have it, just that I don't know what its called. I showed the customer service representative the video and he didn't recognize it either. Even if you can find the name, or a packaging label, that would be of great help. Many thanks Andrew, and again, keep up the great job on your videos! Look forward to watching more :)
+William James This is the stuff www.ebay.com.au/itm/Aluminium-Flashing-Metal-for-Timber-Roofing-By-Meter-150mm-wide/301534175503?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20140106155344%26meid%3D7be9d6b5b77748c48da097d8c9e0c490%26pid%3D100005%26rk%3D1%26rkt%3D5%26sd%3D291385089762
Thank you so much Andrew!! :)
Hi Andrew! Finally made myself a hotwire cutter and getting down to business..... SO! The Clark-Y: Ever notice how the bottom surface is not meant to be horizontal? (according the the schematic the nose is pitched down a bit) Which leads me to ask - Do you just mount your home-made "clarky's" (lol) flat at zero degrees, or do you go to the trouble of tilting them at the angle they were meant to be - and if you have, did you notice any big improvement in lift/performance Vs the horizontal mount? (knowing you, I'd bet you tried both ways ;)
Correct Bill. I usually mount on the fuselage with the trailing edge lifted by about 5mm. It took a while to realise that was needed.
hi andrew good tip using alufoil for templates thats the same way i made the wings of my first plane but i did got zapt by electricty by touchen the templets while cutting the airfoil... lol
i'm trying out the KF 1 and 2 step wings on my newest gliders, did you ever try them out?
+Happy Flyer Ouch nasty. I have never tried KF wings
Great video. Question please: When attaching the templates to the ends of the foam, how do you maintain exact parallel between the two? Seems to me that if I attached one template a centimeter (or a few millimeters) above or below the opposite template the wing would be cut out crooked? I didn't see in the video how you ensured that both templates were mounted exactly opposite each other. Thanks very much for the information. Great channel. New subscriber!
Just measure up from the flat foam block base and match to marks on the template. mm accuracy is easy
nice video, I got some 50mm knauf foam, its quite expensive ($26) in NewZealand and wondered if you can get two wings out of one slice one on top of the other, seems like a lot of waste?
+Ultra RC Yes I have cut 2 RG15 wings from a 50mm piece. As long as you're careful it can be done.
Hello Andrew, thanks for sharing!! I'm following your videos from a while and I found them really useful, thanks for the tips.
I have one question: The wing profile as you showed at the begin of the video, have some convex shape in the bottom (below from 0, or below from wing edge).
I assume that to mount the wing in the fuselage, you have to shape the fuselage with the shape of the wing, to keep the edge of the wing (cero line) aligned to the edge of the plane. Please, could you confirm my assumption?
My question arise because I used to mount my foamboard wings in my square fuses... obviously, my square fuses doesn't have any cavity to hold the wing. Also my foamboard wings are really simple. As you mentioned... hotwire is the next step!
Anyway, thanks for sharing your work and keep doing like this.
Kind Regards from Argentina
(sorry for my bad english)
+Juan Gabriel Vazquez You are correct Juan. Often all it takes is one small piece of foam under the trailing edge, or you can cut the shape into the fuselage.
I have just built my hot wire cutter. Now, in case I use a flat bottom foil, may I align the bottom of the template with the bottom of the foam block in order to not to have to cut the underside?
Yes but you will get a ridge on the bottom of the leading edge. Just needs more sanding to smooth out.
@@AndrewNewton Sure, Thanks!
Hi Andrew, how do you line up the templates? I've watched all your vids but you have never mentioned the method you use? Thanks Chris.
Hello
what program you use to choose the profile and print it on size chosen,
and what type of plate you use to cut the wing, here in Brazil we use the isotope p3.
thank you...
+lnsaud All that is explained in the video. Google search and thin aluminium.
hi...clark airfoil Where can I find the wing drawing program?
I just find a picture and scale it to the size I need
hi Andrew
Just a quick question that spray adhesive your using is that contact adhesive ?
Yes it is. Anything is OK even glue stick
I know its an old video but how do you ensure both ends where the temlate goes are paralell ?
Also how do you put both templates exactly the same place ?
Just careful measurement from the base and front edge, and a fair bit of eyeballing it.
looks good! what was the name of that wire you use?
+Christian Prodanov Sure Catch 1 x 7 strand SS 40kg
Great video! Any idea where i can find this material in Europe?
+Cyberschn1tzel Look for insulation foam in a hardware shop
Andrew Newton oh i meant the aluminium. Ive got plenty of eps and xps as well as depron (took some time to find the good sources tho :) )
I am responding after a while after you posted ur question
Just use cardboard
how would this work with a flying wing? such as the ft arrow the centre airfoil template would be different to the outside, what is different? the legnth of the template?, do i make the outer template i identical im really struggling
The outer template starts off as a scaled down version of the inner airfoil but then it is thickened at the trailing edge for strength. You could keep it simple and use the same inner and outer templates for a wing like the ExAir Synapse
Which is the ampers and volt foa perfect cut, in my last attempt I burned the steel wire.
Frank, for the wire I use it's about 4 Amps. To get 4 Amps I need 16V for my 850mm bow and 6V for my short bow. It might be different for your wire.
+Andrew Newton thaks I really appreciate your help,you are making a really good job.
Which awg or size of hot wire is best for foam cutting
Don't know AWG size but it needs to be about 5 Ohms / metre resistance, I use 90lb stainless steel fishing wire.
I'm using insulation foam know as polyurethane for my plane but the problem is no tape or any film doesn't stay over it
@Andrew Newton i have used only NiCr wire 0,2 mm diametr, is there any difference depend to stainless steel?
where did you get the sipkill airfoil from ?
Googled it. www.aerodesign.de/english/profile/profile_s.htm
Andrew Newton thanks
thank you
how about a glue stick for mounting the template?
Wouldn't be strong enough to hold the template to the foam, but OK for sticking the paper to the aluminium
Just seen your comment on another vid you said you just "eyeball it" 😊
Hi Chris, that's right. But you can measure up from the bottom of the foam and make accurate marks to line up with. Might do a video to explain it better.
pls make a video how to build a DIY Hotwire Bow that would be very nice :)
+BlueMountPicture s Like this one? th-cam.com/video/JIRzQO4F8ck/w-d-xo.html
ok thanks what u using like an old brushed ESC for the electric power ?
ahh ok nice video :D
what are the pins called?
+fpvZeroo My wife gave them to me so I asked where she found them. Here is her answer.
The pins are called “T-Pins”.
They are used by knitters to stretch out and re shape washed shawls and lace work. They come in packs of 50
They are made by a company called Knitter’s Pride (USA)
Outside of the USA, the company is known as “KnitPro”, so when google searching, you may find links to both names.
I buy mine from Handsome Fibres here
www.handsomefibers.com/Knitters-Pride-T-pins_p_216.html
But search in other knitting suppliers
Like
Webs here
www.yarn.com/product/knitters-pride-t-pins/
LoveKnitting here
www.loveknitting.com/knit-pro-t-pins
Deramores here
www.deramores.com/knit-pro-t-pins-pack-of-50
thank you very much
?what type of airfoil used
Clark Y is the best to start with for normal planes
what are the meaning about clark Y i dont understand
I don't understand your question
idont understand your first answer {Clark Y is the best to start with for normal plane
The type of airfoil used for most wings is called "Clark Y" en.wikipedia.org/wiki/Clark_Y
Hi Andrew, Thanks for the detailed clarification on the airfoils setup. I have attempted my first 2 wings but am getting a concave leading edge,laterally. I'm using a 3S battery and the SS 7 strand wire. (Found this on Bay www.ebay.com.au/itm/320720054185?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT ) Travelling slowly with the pull through but probably not slow enough. I'm taking about 30 seconds for the cut. Your video seems to indicate your cuts are faster than this... I'll try a 4S battery but am wary of the additional heat on the foam and cut through. Any suggestions would be welcome?
+rustyact01 Sounds like too much drag and bowing of the wire. That's why I increased the voltage to 16v (4S) I'm using 90lb (40kg) wire and stretching it as tight as possible with out breaking the frame. I suspect your wire would not take 16V and lots of tension. Also depends how long your wire is too, mine is about 800mm between the aligator clips. I'll get back to you about cutting time after my next wing.