I just received my May-Jun 2014 N Scale Railroading magazine. On p. 52 there is an article by Richard C. Thompson about modeling an engine using the 3D printing process. In the photo captions, he refers to soaking the new, translucent shell with Bestine, a rubber cement solvent and thinner, to solidify the shell. After soaking, the shell becomes opaque but will continue to harden until it is sealed with paint. I had never heard of this. Is this necessary for all 3D products? Do others on TB do this also? I have a grain trailer I have been putting off and I may need to get to it. Thanks for the help.
I've heard the name "Bestine", but know nothing about it. My copy of NSR just arrived, so have not read the article.
http://papercement.com/cgi-local/SoftCart.100.exe/scstore/c-bestine.html?L+scstore+qddd8457ff9b3b9b To order direct. Randy
I get bestine at my local art supply store. It works well on printed shells. I don't know if the article is about Shapeways shells or Mark 4 Design shells, my issue of NSR isn't here yet.
https://www.shapeways.com/model/1087732/bq23-7-cab.html?li=shop-results&materialId=61 Like this ?? Randy
I've got a lot of FUD models from Shapeways and soaking them for a few days works out good. If you do not soak them the wax stays on the models and: Paint won't dry Paint won't stick You mess up your other models with migrating wax. You make your workbench waxy and nasty etc.... Randy
I presume that "FUD" is the material the model is made from. Frosted Ultra Detail? I think that is what mine is made from. I have read about soaking for 24 hours in Goo Gone, another solvent.
If you can get it -try this: http://www.ebay.de/itm/Modellbahn-R...dellbau_Modelleisenbahnen&hash=item3cb801b449 It is called SR24 and more or less a standard for European N- Scalers to clean everything - like dirty rail or overlubricated locos. It does not attack plastic or paint. I don't' t now what it is -a petroleum distillate (Surprise!! - thats what the label says),and it is neither burning (or explosive) nor conductive. It works great on any grease, including wax.I put my Shapeway casts into an ultrasonic cleaner and have a clean casting (and lots of wax in the solution) about 30 minutes later. stp
It would be interesting to have several 3D printed objects all subjected to different solvents to see how the FUD reacted to them. I've not seen any experiments like that before, has anyone done something like that before?
Well... I tried Scalecoat paint stripper and destroyed 2 models so that one is a bust..\ Experimenting can be expensive !!! Randy
I haven't tried anything but Bestine, but have soaked hundreds of models to date. It works well. I have lots of photos on my blog of 3d printing stuff. here are some of raw models and soaked models. HuskerN www.nscaleaddiction.blogspot.com
Bestine can be found at many art supply stores. It is a rubber cement thinner and typically on the shelf near it. Here is a 15 page thread on cleaning FUD for your info/amusement. http://www.therailwire.net/forum/index.php?topic=28137.0 Best wishes, Dave
A round up of previous posts. Ron - as Randy has said [thanks] BQ23-7 available in my shop, HO and N. Here in the UK Bestine is not available, I use Non Acetone nail varnish remover, once it has soaked it needs a bit of drying time turns out exactly the same way as bestine process. I always give the model a coat of primer before any top coat usually Tamiya fine primer. It is only FUD [frosted ultra detail] and FD [frosted detail] that requires this process, WSF [white strong and flexible] only requires painting but definitely requires a primer since the material soaks up paint.
