RAZNO > MATERIJALI / TEHNIKE OBRADE U MODELARSTVU

Lepak???

<< < (9/10) > >>

nedbojsa:
Dobro ljudi ajde neko  neka mi odgovori zašto se igrate sa ping pong lopticama, to moraju strenžeri zato što nema u maloprodaji nitro laka, tj. gde ga ima košta kao zlato. Kod nas barem na svakom koraku ima nitro laka, ta varijanta  sa lopticama nije baš jeftina. Ima jeftinija varijanta doći do istog rešenja, bezdimni barut kutija je oko 200-300 din, a od jedne kutije može da se napravi najmanje 5-6 litara izuzetno gustog laka. recept potpuno isti kao i sa ping pong lopticama, samo daleko jefitinije, a opet što bi to radili pored dostupnog i jeftinog nitro laka.

Ping pong loptice, bezdimni barut, nitro lak su proizvodi napravljeni od nitroceluloze a razlika između one u laku, ping pong loptice barutne je ispod 1% azota (nitro po američki).

rajevic:
"tibeteagle i doajen"
Hvala na iscrpnim odgovorima a i na informacijama. Za svaku pohvalu na brzom odgovoru.  (res)

doajen:

Neznam zasto ali mi nesto pade napamet da uporedim cenu desetak grama tog centrovog lepka i ovoga "domace" proizvodnje?

tibeteagle:
Celuloidni lepak se danas već malo koristi u modelarstvu. Zamenio ga je Cianoakrilatni Super lepak koji se veoma dobro i brzo uvlači u pore drveta i mnogo brže se suši. Izrađuje se u više gustoća. Prilikom kupovine u našim samoposlugama, gde se prodaje u malim tubama, treba proveriti da li je Gel ili Liquid. Gel je za porozne materijala kao drvo i porculan dok je redak za plastiku i metal. Retki se ponekad koristi i za drvene konstrukcije trupa i krila modela.



Onaj univerzalni redak cianoakrilatni lepak koji se može kupiti u kineskim radnjama je isto dobar i jeftin. Treba probati.



Inače veoma valika je ponuda ove vrste lepka u modelarskim radnjama pa i preko net šopova.



Pažnja! Ovi lepkovi su otrovni prilikom udisanja i ne sme da kapne na kožu!

Ima puno dobrih video uputstava kako da se koriste lepkovi u modelarstvu. Evo jedan opšti koji prikazuje koje 3 kategorije lepila se najčešće koriste danas.

nedbojsa:
Da su otrovni, otrovni su kao i druge stvari lepila i treba ih koristiti na otvorenom ili u dobro provetrenoj prostoriji. Ali da ne smeju da padnu na kožu ne vidim neki razlog osim što će zalepiti istu, trovanje kao razlog ne vidm pa ne bi ih koristili u medicini za lepljenje tkiva i zatvaranje rana da su otrovni toliko. Ove moderne žene dnevno kapaju sebi po prstima lepeći nokte.


--- Quote ---Medical Some rock climbers use cyanoacrylate to repair damage to the skin on their fingertips.[9][10] Similarly, stringed-instrument players can form protective finger caps (in addition to calluses) with cyanoacrylates.
CA glue was in veterinary use for mending bone, hide, and tortoise shell by the early 1970s or before. Harry Coover said in 1966 that a CA spray was used in the Vietnam war to retard bleeding in wounded soldiers until they could be brought to a hospital. Butyl cyanoacrylate has been used medically since the 1970s. In the US, due to its potential to irritate the skin, the U.S. Food and Drug Administration did not approve its use as a medical adhesive until 1998 with Dermabond.[11] Research has demonstrated the use of cyanoacrylate in wound closure as being safer and more functional than traditional suturing (stitches).[12] The adhesive has demonstrated superior performance in the time required to close a wound, incidence of infection (suture canals through the skin's epidermal, dermal, and subcutaneous fat layers introduce extra routes of contamination),[12] and final cosmetic appearance.[13][14]
While standard "superglue" is 100% ethyl cyanoacrylate, many custom formulations (e.g.,, 91% ECA, 9% poly(methyl methacrylate), <0.5% hydroquinone, and a small amount of organic sulfonic acid[15] and variations on the compound N-butyl-cyanoacrylate's for medical applications[12]) have come to be used for specific applications.
 Feather and nail Cyanoacrylate is used in archery to glue fletching to arrow shafts. The special "fletch-tite" glues are really cyanoacrylate repackaged in special fletching glue kits. Often these tubes have a long thin metal nozzle to aid in better accuracy in the application of the glue to the base of the feather or plastic fletching to ensure a good bond to the arrow shaft.
Cyanoacrylate is used in the cosmetology/beauty industry as a "nail glue" for some artificial nail enhancements such as nail tips and nail wraps, and is sometimes mistaken for eye drops causing accidental injury.[16]

--- End quote ---

Navigation

[0] Message Index

[#] Next page

[*] Previous page