Information: Please take a moment and visit your profile to choose a flag.

Advances in 3D Printing at 1/144

For the sharing, discussion and collaboration on 3D Printing and other specialist techniques
User avatar
glehn
Manufacturer
Manufacturer
Posts: 422
Joined: Sun Dec 19, 2010 14:30
1/144 Interest: Yes
Contact:
Brazil

Re: Advances in 3D Printing at 1/144

#21

Post by glehn »

Following Mike's advice, I decided to test the clear resin. Printed some canopies and helicopter cabins as a first test yesterday. Quite happy with the results. I will follow your advice, Mike, and put them directly in the curing chamber without washing with IPA.
20210417_094923.jpg
Regards
Luis

Decapod
Flight #8
Flight #8
Posts: 83
Joined: Sun Jan 06, 2013 12:21
1/144 Interest: No
Location: London
Contact:
Great Britain

Re: Advances in 3D Printing at 1/144

#22

Post by Decapod »

Looks really nice Luis - My clear resin arrives tomorrow, I'll have to start experimenting :)

Lots of stories about it going yellow over time so will need to test it in the sun for a while.

User avatar
ajmm
JV 144 6 Star
JV 144 6 Star
Posts: 3710
Joined: Tue Sep 02, 2014 6:46
1/144 Interest: No
Contact:
Nambia

Re: Advances in 3D Printing at 1/144

#23

Post by ajmm »

Does sunlight make it un-yellow? I've got lots of yellowed resin canopies from Anigrand etc. that would benefit from that treatment. I know sunlight is supposed to un-yellow old decals but I've not had much luck with that (maybe it's a longitude thing).

User avatar
BigReg
JV 144 6 Star
JV 144 6 Star
Posts: 1666
Joined: Tue Apr 06, 2010 14:23
1/144 Interest: Yes
Location: Chilsworthy, Devon, UK
Contact:
Devon

Re: Advances in 3D Printing at 1/144

#24

Post by BigReg »

ajmm wrote:
Sat Apr 17, 2021 13:14
Does sunlight make it un-yellow? I've got lots of yellowed resin canopies from Anigrand etc. that would benefit from that treatment. I know sunlight is supposed to un-yellow old decals but I've not had much luck with that (maybe it's a longitude thing).
It works on decals here in Devon maybe when you get to Wales............
David

User avatar
smeg1959
JV 144 6 Star
JV 144 6 Star
Posts: 7152
Joined: Tue Apr 06, 2010 11:12
1/144 Interest: Yes
Location: Wantirna, Victoria, Australia
Contact:
Australia

Re: Advances in 3D Printing at 1/144

#25

Post by smeg1959 »

The "unyellowing" is essentially the bleaching effect of UV light on components of the decal varnish. Despite being in a land renown for its sunny days and with some really old decals in the stash, I've never tried this out, preferring to substitute the decals for newer ones. As for UV light "unyellowing" clear resin, I have my doubts. What you might find is that the UV might cause them to yellow even more or become brittle and crack. Guess the best way of testing this out is to get a yellowed canopy and pop it out in the midday sun (along with the mad dogs and Englishmen).
OTB ...
GB14 - CAC CA-19 Boomerang (KdK), PZL.37 B II Łoś (Amercom)

User avatar
F_IV
JV 144 6 Star
JV 144 6 Star
Posts: 2640
Joined: Sun May 15, 2011 9:45
1/144 Interest: Yes
Location: Girt by Sea
Contact:
Australia

Re: Advances in 3D Printing at 1/144

#26

Post by F_IV »

I saw a YouTube video the other day, of a fellow that restores dilapidated electronics and game consoles. He had an ancient Nintendo machine that had yellowed very badly indeed. He put it in a bath of benzol peroxide and aimed a UV light at it for 48 hours. At the end of it the plastic looked brand new. I wonder if leaving your canopy in a small jar of the stuff on a windowsill would do the same thing.

User avatar
smeg1959
JV 144 6 Star
JV 144 6 Star
Posts: 7152
Joined: Tue Apr 06, 2010 11:12
1/144 Interest: Yes
Location: Wantirna, Victoria, Australia
Contact:
Australia

Re: Advances in 3D Printing at 1/144

#27

Post by smeg1959 »

Interesting. If I had any yellowed transparency lying around, I'd try this myself. And, for the record, you can purchase benzoyl peroxide solutions from pharmacies (it is commonly used for treating acne). There are several YouTube vids covering the process, including this one. What interested me is what the guy says in the first minute, that the yellowing is down to the flame retardant used in the plastic. If this is the case, the question I'd ask are the transparencies yellowing due to the same compound or similar. If the benzoyl peroxide/UV treatment works, then I'd say it is.
OTB ...
GB14 - CAC CA-19 Boomerang (KdK), PZL.37 B II Łoś (Amercom)

Post Reply

Return to “1/144 3D Printing and other specialist techniques”

Who is online

Users browsing this forum: No registered users and 2 guests