Rolled vs. folded plans

This is kinda sad thing. As the cost of mailing has increased I have had to make changes to product packaging. When I started this business 8 years ago I decided that I will not never ship folded plans. Mostly due the fact that folded plans are not good for building. I kept that idea for ages but then mailing costs kept creeping up. And couple years ago they crept up really. Also, Finnish postal services stopped delivering maxi-letters inside Finland. They had to keep delivering them outside Finland, so that did not really matter too much.

But then the prices jumped a bit. Last time I shipped rolled plans the cost of mailing was more that customer paid for plans. That was approx 25€. Which is bad. Really bad. Same plan shipped in envelope (folded…) cost approx 6€.

So some time ago I started changing all delivery statements in my pages (www.iwaru.fi) to not include promise of rolled plans. Currently all plans ship folded.

I know this is not optimal for some builders. So if you need rolled plans pls. contact me and I can arrange shipping rolled, with some extra cost. Also, when you order short kits plans are rolled.

New design project : VL Pyörremyrsky

Just an brief note, I have started new design project, VL Pyörremyrsky to size 1:6. You can check out photo gallery of that plane here.

Current stock status

We have couple models in stock if someone wants ultra-fast delivery. Normal delivery time is 3-4 weeks to shipment and for in-stock items it is … fast.

Models marked with (*) are in proto-phase. They are built but for several reasons not yet flown.

PIK-18 Sytky Peanut released to free download

Hi,

just an quick note, I released Peanut version of PIK-18 Sytky into free download. Steer your browser to http://iwaru.fi/sytky-peanut.html

 

 

 

 

 

 

Flight video here, this plane has been built by Mr. Tapio Linkosalo :

These puppies are going to fly to world tomorrow!

Couple pics of new version of Hinu 1.5m cowling mould

This is actually old news, but I just wanted to share you pics of advanced mould for 1.5m Hinu (kit nr. 117) cowling. Original mould was too high and it caused all kinds of problems while vacuforming parts. Mainly webbing at the bottom of mould. Success ratio was approx 1 good for 20 tries. So I had to make an better mould.

Second try split mould into 3 parts. Front, top and bottom. All these must be vacuformed separately. There is nothing new in the actual mould making process, it’s just a bit more complicated. I assembled all wooden parts into one block which was sanded to shape and then dismantled. Then over-runs were added and mould was ready. I was making some vac parts couple weeks ago, these pics are from that run. Now success ratio is approx 1 fails for 10 goods. Nice, really nice!

Preparing new set of kits..

Great!

And then some vacuuming…

It’s time to do some vacuum molding. Theory is simple. Heat plastic using frame, slap it on top of mold with base perforated with holes to allow suction to pull plastic down.

That’s theory. In practice it means several try’s and fails. But eventually I found better settings. I was forced to order new sheets from stockist (5 large sheets in total (1.5×2.5m or something..), that means plenty of plastic). With smaller canopies it seems that 0.5mm stuff is optimal, but anything bigger really needs 0.75mm. I am using PET-G and APET sheets from local ETRA-shop. Which is really professional shop for all kinds of industrial stuff. I am using brands Vivak and NudePetG (funny…).

Anyway – now I have plenty of L-70 Vinka & PIK-16c Vasama canopies. Along with PIK-18 Sytky cowlings. Actually I have 3 vac boxes for different size molds. You might notice that biggest one needs double vacuums to do the trick. Actually that vac box is designed with oven size as an guide. It really is the biggest one which I can make without resorting to more exotic stuff.

Next step is to finetune PIK-15 Hinu (1.5m) canopy and cowling and do at least 4 sets of those. Also I need new batch of my really pro aileron covers.

Prototype parts arrived from cutter :)

Great!

kuva 2

Redigo…

Oops.. I just forgot to add one thing. This will be drawn to 1:6.67 size, due the nice feature of this design. It shares canopy with L-70 Vinka. As an lazy person I really do not want to make second canopy mold for this plane. So to save time and effort it will be same size as my previous project.

Canopy mould of L-70 Vinka kit. Not finalized, but getting there.

Canopy mould of L-70 Vinka kit. Not finalized, but getting there.