downunder -

utorak, 27.12.2011.

Daska za kite surf zavrsena!

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Finally second fiberglass layer goes on top! I've decided to finish glassing with the proper breather and bleader fabric and what a difference!
This fabric is really cheap, just a few bucks for couple of meters. Now, vacuum bag is a different matter! Since I'm using a tick vinyl for my vacuum bag, it is possible that the fabric won't bridge the gap between two layers, marine ply and bamboo. But than, the proper thin vacuum bag fabric is so difficult to work with that I've put everything in my vinyl bag. This means the proper vacuum fabric bag inserted in my bag and applied vacuum.
The reason for this is that I just couldn't apply the vacuum on a new 'proper' bag:(
And since the time is important while doing it the only option was to quickly use my proven solution for vac bagging.

Konacno stavljen zadnji sloj fibergalsa na gornju povrsinu daske! Odlucio sam zavrsiti taj proces sa profesionalnom 'breather' i 'bleader' tkaninom i to zaista vrijedi!

Tkanina je jeftina, nekoliko dolara za par metara. No, vreca za vakum je druga prica. Kako sam koristio dosta debeli vinil kao materijal za vrecu, vinil se vjerovatno ne bi dovoljno savinuo izmedju dva slojeva sperploce sto cine dasku. No, vrlo tanak materijal za 'pravu' vakumsku vrecu se pokazao kao tazak za raditi, pa sam na kraju sve zajedno stavio u 'moju' vinil vrecu. Sto znaci 'prava' vreca u vinil vrecu i tad pod vakumski pritisak. Razlog tome je sto jednostavno nisam mogao dobiti vakum na novoj 'pravoj' vreci od vrlo tankog ali cvrstog materijala.

I kako je vrijeme jako vazno dok se to sve radi , zadnja je opcija bila da brzo vakumiram sa dokazanim postupkom.

I'm using a special super clear epoxy as final fiberglass resin. Around 52 grams.

Koristim poseban bezbojni epoxy kao zavrsni sloj uz fiberglass. Utroseno oko 52 grama.

Proven vacuum quick release clamp:) A bit of Blu Tack around. Need to make this better for next time. Also notice VERY important thing which is a perspex leftover with a small hole in the middle and channels like X under. Without this the 60 cents vacuum plug can't stick on vinyl vacuum bag!
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Dokazan nacin spajanja vakumske pumpe. No, moram sistem jos doraditi. Primjetite znacajnu stvar sto je komad pleksiglasa sa malom rupom u sredini i kanalom kao slovo X ispod. Bez toga par kuna vrijedan vakumski priljepak se ne moze priljepiti za vakumsku vrecu!

Vinyl vacuum bag sealed this time with Blu Tac. Quite faster than using a tape. And reusable too!
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Kompletna vakumska vreca zatvorena je 'plastelinom' tj. slicnim materijalom. Puno brze za raditi nego selotejpom i mogu ponovno koristiti!

Too much of epoxy resin going out through perforated breather fabric. This is exactly what we want! Note, applied vacuum of around only 15 mm of mercury. You can see the vac pump under the bag and a white breather fabric...
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Visak epoxya izlazi van kroz perforiranu foliju i to je upravo sto zelimo! Ovaj puta koristio sam 'samo' pritisak od 15 mm zivine vage. BIjela tkanina je 'breather' - za disanje.