Wow, Your work and these building tutorial videos are really treasures! I have not seen a such perfect and precise as You have done these foam cores. 👍
I'm cutting cores today. I've practiced on junk foam, and today I'm ready. I am employing the testing that Curtis Suter recommends. That is to get it all set up and then put a heavy item such that your block can't move and then place the hot wire with power off on top of the block. Move the arm down, and it will drag the wire across the top of the block. When it gets to the TE side of the block, you can see if the wire is going to exit both sides of the foam at the same time. A dry run, so to speak. Then reset everything and turn on the power, and make your cut. It works great. I've cut 3 perfect blocks with 3 more to go. It's a little extra work, but it allows for fine adjustment of the settings before you actually cut the block. My confidence is way up! Thanks again. David
That's awesome! You're on your way to a wing !!! I can't tell you how many hours I spent finding the sweet spot for temp/speed but it's satisfying once you nail it . 👌
Buongiorno Mr. Le faccio i miei complimenti per i suoi video. Sono molti anni che costruisco e seguo video tutorial da tutto il mondo. Ma i suoi video sono i più belli in assoluto! Spiegazioni chiare, qualità video ottima, la sua voce è molto calma e rassicurante, tecnica ottima, molto raffinata e precisa. Video non lunghi ma che dicono tutto e precisamente. Punteggio: il massimo, 10!!
@@amonus-air2160 oh I’ll stay tuned. For some reason I thought that this was an older upload of yours. I was on a foam-cutting and hollow molding RUclips vortex last night and wasn’t checking dates on stuff posted, so appreciate the heads up. Good luck on the rest of the build!
Great work :-) Our Community are looking forward to the full series and following you :-) The Book Group -- DLG / HLG COMMUNITY for Newbies, Starters & Kids
I tried cutting a core this weekend but lost material at the trailing edge because it was too thin to cut properly. My templates were the exact width of the wing. I’ve just noticed your templates are wider than the wing and you’re trimming the trailing edge after the hot wire cut. How much wider do you make your templates and how thick do you aim to get the trailing edge after trimming? I hope this makes sense and apologies if it’s a stupid question .. I’ve never done anything like this before! Also, glad you’re back!
Hi! I usually have a 15mm run-in area ahead of the leading edge and a 15mm run-out behind the trailing edge. Also, when I put in the info at airfoiltools.com, I always add a .5mm halo. This halo is the actual travel line of the wire as you lose material as you cut. One more thing is if I find the trailing edge is thinning out, I'll raise the trailing edge with tape of the top cut template to suit. My final trailing edge thickness pre-sanding is 1mm. Hope this helps and thanks for the question 😎👍
I use aluminum flat stock for my templates and find it to work well. It's stuff from my construction days and is around .023" thick. The foam is intended for exterior wall sheathing. I buy it in 2x8 ft. sheets 1.5" thick. Manufacturer has it listed as 20psi.
Hi! You could do that, use one airfoil template at the root, one at the tip. That being said, I choose the Synergy-II airfoil, which requires multiple sections in order to achieve the proper airflow characteristics as it was designed. The Synergy-II is a top tier wing design. Thanks for the question.
so on the feed arm, one string will be travelling a little faster then the other in order to have the wire finish at the end of the cut equally. That calculation just tells you were to put the slower side (short side) Think of it as the difference of travel distance as a percentage. Thanks for the question :)
Measure from the hot wire to the reference horizontal line on your table. Measure from the clip to the line on the long side. EX. 150 mm. Then, measure the short side. Ex. 110. Now do this math. 110 / 150 = 0.7333. Now attach your pull string on the short side at the 73% mark. The long side string always gets clipped to the 100% mark. Now test the setting by sliding the wire on top of the block to see if it's correct. Then reset everything and make your cut.
IMHO: IF YOU WERE TO STAND YOUR FOAM BLANK UP, ON EDGE, WITHE THE TRAILING EDGE DOWN TOWARD THE TABLE, AND LEADING EDGE UP, TOWARD THE CEILING), AND CUT MOSTLY IN THE VERTICAL "UP" DIRECTION", YOU MIGHT GET SUBSTANTIALLY CLEANER, FASTER CUTS, (BECAUSE THE WIRE WOULD BE CUTTING INT PREHEATED FOAM, (FOAM HEATED PRIOR TO THE PASSING OF THE WIRE,.. USING THE ADVANTAGE OF THE "RISING HEAT"...
Wow, Your work and these building tutorial videos are really treasures! I have not seen a such perfect and precise as You have done these foam cores. 👍
thank you so much my friend. I glad you like them :)
I'm cutting cores today. I've practiced on junk foam, and today I'm ready. I am employing the testing that Curtis Suter recommends. That is to get it all set up and then put a heavy item such that your block can't move and then place the hot wire with power off on top of the block. Move the arm down, and it will drag the wire across the top of the block. When it gets to the TE side of the block, you can see if the wire is going to exit both sides of the foam at the same time. A dry run, so to speak. Then reset everything and turn on the power, and make your cut. It works great. I've cut 3 perfect blocks with 3 more to go. It's a little extra work, but it allows for fine adjustment of the settings before you actually cut the block. My confidence is way up! Thanks again. David
That's awesome! You're on your way to a wing !!!
I can't tell you how many hours I spent finding the sweet spot for temp/speed but it's satisfying once you nail it . 👌
Buongiorno Mr.
Le faccio i miei complimenti per i suoi video.
Sono molti anni che costruisco e seguo video tutorial da tutto il mondo.
Ma i suoi video sono i più belli in assoluto!
Spiegazioni chiare, qualità video ottima, la sua voce è molto calma e rassicurante, tecnica ottima, molto raffinata e precisa.
Video non lunghi ma che dicono tutto e precisamente.
Punteggio: il massimo, 10!!
Good stuff! I hope that she flew as well as your build techniques have me thinking it should. -CM
I guess I'll find out when we maiden it...thanks for the comment
@@amonus-air2160 oh I’ll stay tuned. For some reason I thought that this was an older upload of yours. I was on a foam-cutting and hollow molding RUclips vortex last night and wasn’t checking dates on stuff posted, so appreciate the heads up. Good luck on the rest of the build!
thanks
Bravo!!! ❤❤❤
thanks!
Genius!❤
Great work :-) Our Community are looking forward to the full series and following you :-) The Book Group -- DLG / HLG COMMUNITY for Newbies, Starters & Kids
thank you very much and happy you're finding the content helpful 😎
Hi very good clips wonder how you do the servos with line on tail elevator interested to know thanks
Hi. That will come after the tail are bagged.
Perfect
awesome
I tried cutting a core this weekend but lost material at the trailing edge because it was too thin to cut properly. My templates were the exact width of the wing.
I’ve just noticed your templates are wider than the wing and you’re trimming the trailing edge after the hot wire cut. How much wider do you make your templates and how thick do you aim to get the trailing edge after trimming?
I hope this makes sense and apologies if it’s a stupid question .. I’ve never done anything like this before!
Also, glad you’re back!
Hi! I usually have a 15mm run-in area ahead of the leading edge and a 15mm run-out behind the trailing edge.
Also, when I put in the info at airfoiltools.com, I always add a .5mm halo. This halo is the actual travel line of the wire as you lose material as you cut.
One more thing is if I find the trailing edge is thinning out, I'll raise the trailing edge with tape of the top cut template to suit. My final trailing edge thickness pre-sanding is 1mm.
Hope this helps and thanks for the question 😎👍
@@amonus-air2160 Thanks so much for your reply! I’ll give it another try. Peace ✌️ 😊
What do use for template material? Also what density foam are you using. Thank's
I use aluminum flat stock for my templates and find it to work well. It's stuff from my construction days and is around .023" thick.
The foam is intended for exterior wall sheathing. I buy it in 2x8 ft. sheets 1.5" thick. Manufacturer has it listed as 20psi.
@@amonus-air2160 Thanks bud I appreciate it
Hi I'm looking to cut my 1st wing cores. I'm wondering why you don't just cut the whole wing core at once thankyou
Hi! You could do that, use one airfoil template at the root, one at the tip. That being said, I choose the Synergy-II airfoil, which requires multiple sections in order to achieve the proper airflow characteristics as it was designed. The Synergy-II is a top tier wing design.
Thanks for the question.
01:22 Can you please elaraborate the calculation pls? Thanks in advance
so on the feed arm, one string will be travelling a little faster then the other in order to have the wire
finish at the end of the cut equally. That calculation just tells you were to put the slower side (short side)
Think of it as the difference of travel distance as a percentage. Thanks for the question :)
Measure from the hot wire to the reference horizontal line on your table. Measure from the clip to the line on the long side. EX. 150 mm. Then, measure the short side. Ex. 110. Now do this math. 110 / 150 = 0.7333. Now attach your pull string on the short side at the 73% mark. The long side string always gets clipped to the 100% mark. Now test the setting by sliding the wire on top of the block to see if it's correct. Then reset everything and make your cut.
IMHO: IF YOU WERE TO STAND YOUR FOAM BLANK UP, ON EDGE, WITHE THE TRAILING EDGE DOWN TOWARD THE TABLE, AND LEADING EDGE UP, TOWARD THE CEILING), AND CUT MOSTLY IN THE VERTICAL "UP" DIRECTION", YOU MIGHT GET SUBSTANTIALLY CLEANER, FASTER CUTS, (BECAUSE THE WIRE WOULD BE CUTTING INT PREHEATED FOAM, (FOAM HEATED PRIOR TO THE PASSING OF THE WIRE,.. USING THE ADVANTAGE OF THE "RISING HEAT"...
right