Due to the loss of our home and workshop we are not able to fill any orders at this time.

Sorry about that!

Working with clear resin for canopies and other sublime forms of torture.

Saturday, February 25, 2017

A number of people have asked about the process of making model canopies with clear  resin recently, so finding myself with a spare hour I have decided to write up a blog post on how I do it.

The initial shape, or plug must be made from a hard material, preferably non-porous.Wood is lovely to carve and finish, but ultimately will cause more trouble than it's worth, so it's best to use a synthetic wood like Ren-Shape, or a block of hardened Bondo or a similar filler. The form must be somewhat undersized, as you're going to smash-mold or vac-form heated plastic over it to get the wall thickness you want. Plan ahead! Make the master longer and deeper than the finishsed part so you can trim the edges perfectly square and clean.If your plug is net to the size of the final part at the ends the plastic will roll over the edges and you're back to square one.

 Any scratches or tool marks that are on the plug will transfer right over to your future master, so be prepared to spend a long time smoothing and finishing the plug.Soothing music and the occasional adult beverage will help. I prefer Blues and a good gin & tonic.

Once you have a clean plastic shell to work with, you must polish it to a very high finish. I use very fine wet sandpaper ( 600 grit ) for the first pass, with a drop of dish soap in the water to prevent loading up of the sandpaper, which will cause nasty scratches and another beverage, perhaps two.

I then work the surfaces of the canopy master to a better  polished finish with varying grits of Micro-Mesh, and then cast a prototype in a silicone rubber mold from which I can make opaque resin castings.There are two reasons for doing this: Firstly, the urethane resin part will be harder than the plastic one in most cases, and will therefore take a higher polish, and secondly because you're going to ruin a few masters scribing lines in them before you get one you're happy with.Trust me on this, it may seem like a pain, but it will pay for itself many times over.

Final polishing is best done with a small felt bob and a Dremel tool.Use fine rubbing compound and then swirl removing compound from the auto pats store.A gentle touch is required here or you will get the part hot and it will deform.

The nifty resin master will need the transparent parts outlined, preferably with fine scribed lines.I use the 3M vinly tape sold in auto parts stores to outline the frames and a sewing needle held in a pin-vise to do the scribing.Black electrical tape is also very good for this.Start out gently, and make a number of passes so as to create a smooth line, then burnish it with a toothpick.These scribed lines are going to be very important later on, so if you muff one, scrap the part and start over.

Once you have a shiny master with good outlines of the transparent bits, you can clean the part with Windex and give it a dip in Future, or Johnson's Klear, Pledge with Future Shine or a similar acrylic floor wax. If all goes well, you will have an extrememly glossy, perfect master from which to make a mold. If you like, you can take Scotch lo-tack painters tape and use that toothpick to burnish it down into the scribed outlines and cut out the frame.This allows you to spray a bit of matte primer onto the frames which will  make them more visible  later on for painting.Remeber to mask off the interior of the master, ask me how I know!

 

The finished masters are then molded for casting in clear resin.Most clear resins do not cast well in tin-cure RTV rubber, although it can be done.Platinum cure rubber is best as the resin will not react to it and it will not shrink during cure.

In the photo above you can see the primered frames have a different texture than the polished areas that will remain clear.

There are quite a few clear casting resins available today, my weapon of choice is BJB Industries WC-784 which has proven to be fairly reliable.The resin must be cast into the mold after mixing, and then the mold put into a pressure pot  with 35 to 40 pounds pressure piped in to crush any small bubbles.With this resin you must also heat the pressure pot to 120 degrees f and hold it there for three hours or so to get a perfect cure. I do this with an elctric oil heater under the pot, and the whole affair covered with an old blanket to hold in the heat.

As you can see, it's a long, involved process.You can probably find a resin to work with that does not require the heating for a good cure, but either pressure casting or vacuum casting is a must to avoid those pesky bubbles.

It took me a long time to get a reasonbly reliable production technique worked out for this stuff, if you're game to try it I say have at it and good luck! If it was easy, everyone would do it.

Best, 

Paul

 

 

Comments

Resin

Thanks for sharing all of these very useful information about clear resin. The pictures really helped!

Great Pictures

The pictures really helped me out as well! Thank you so much! Great blog post.

Great blog

Lots of good details and photos here. Thanks for sharing this blog about clear resin. Super helpful!

Avid Fan now!

I never know I could do this. Thank you so much for sharing!

Hello guys!

Hi! Welcome to new Sex-dating website: ->>>>>>>> http://fastdates24.club Find your love right now!
Register now! ->>>>>>>> http://fastdates24.club

dating sex
dating sex dating free sex online dating sex dating sites sex dating for free adult dating sex dating sex online dating sex site sex dating
porn erotic teen girl adult

Hello guys!

Hi! Welcome to new Sex-dating website: ->>>>>>>> http://fastdates24.club Find your love right now!
Register now! ->>>>>>>> http://fastdates24.club

dating sex
dating sex dating free sex online dating sex dating sites sex dating for free adult dating sex dating sex online dating sex site sex dating
porn erotic teen girl adult

Avid Fan now!

Very interesting content!

Great job for publishing such

Great job for publishing such a nice article! https://alldaytowingnewjersey.com/

Wonderful write-up! Thank you

Wonderful write-up! Thank you for this impressive post. https://www.hobbschurchofchrist.com/

Cool!!!!

Cool stuff! Thanks for sharing Asphalt Repairs Toronto

Cool stuff!

Thanks stuff! Thanks for sharing!
https://www.roofersfredericton.ca/

Great job for publishing such

Great job for publishing such a nice article! https://www.towtrucklexington.com/

Love your Crafts, Keep Going.

Have always loved your work Paul. My son found your site a few years back. We hope you keep on going. residential electricians

Awesome

This is great for our window team.

Amazing write-up! Thank you

Amazing write-up! Thank you for this awesome post. https://www.hobbschurchofchrist.com/

Wonderful write-up! Thank you

Wonderful write-up! Thank you for this impressive post! https://alldaytowingnewjersey.com/

The information you have

The information you have posted is very useful. The sites you have referred was good. Thanks for sharing...
OTO Links

Avid Fan now!

I love arts and crafts so this is a very nice tip for me.

GTA San Andreas

G.T.A. San Andreas' newest model v1.08 up to date with a lot of options. In safety, menu test and go here www.e-spirt.net, the Unknown Sources examine field for putting in G.T.A. San Andreas apk.

Great article! Thanks for

Great article! Thanks for sharing this with us! https://midlandtxlawns.com/

Avid Fan now!

Wow. Awesome blog!

concretesaltlakecityut.com

Concrete

Thanks so much for the insight! I am officially inspired! - Pontiac Concrete

Home care los angeles

There is a lot of new information coming to light and it would be useful. Home care los angeles

פוסט מרענן במיוחד. לגמרי

פוסט מרענן במיוחד. לגמרי משתף.

survey

Cinderella Solution is a 100% scientific and safe weight-loss method. It helps a woman lose fat by healing her body from the inside and activating her dormant fat-burning hormones. However, does the Cinderella Solution really work? This Cinderella Solution review gives you the positives and negatives so that you know what to expect.

Wishing you nothing but success!

You deserve global domination and this is definitely a step toward that direction. I've never met anyone as professional as you. face mask

Great work!!!

A big congratulations to everyone involved. It will be a big curiosity to see what great potentials can now be realized!

Good information.

Good information to know. I'm sure expectations internally and externally are very high. Learn More

Love your blog.

Love the comments on your blog, So many interesting websites to look at, and here's another one! shower and tub services

Thank you for sharing

Wow, congrats on joining companies. That is so exciting. Thanks for sharing your blog. Tree Removal

You're one of a kind!

I have just visited your website and I truly enjoy it. stump removal

I enjoyed the post

Great to hear you sharing your perspectives of value for the process. Hope your going strong. https://www.airbnbcleaningserviceanchorage.com

Would like to know

Would be interesting to know if your resin information and viewpoint has changed over the past several years? Fixing Broken Pipe

I will be sharing this

I will be sharing this information with my work colleagues after performing Installing New Septic Tank at work later.

This has brought to our

This has brought to our attention a new way of viewing a solving of a problem. Repairing Garage Door

We will be passing along your

We will be passing along your article posting at our : Septic System Service meeting tomorrow.

We will be looking to use a

We will be looking to use a simiar enginerring practice at www.junk-removal-anchorage.com

This resin can be applied

This resin can be applied right away with the operations we run at Metal Framing Drywall Repair Rapid City . Thank you for sharing!

How To Life Guide

In the event you take a look at what you've got in life, you’ll at all times have additional. In the event you take a look at How To Life Guide at what you don’t have in life, you’ll by no means have sufficient.

Amazing

This is so amazing especially to those people who are so into crafts and such.

www.greenbayroofingpros.com

Poker games

One of the greatest ways to appreciate our spare situs judi qq poker online slots is by playing on your desktop computer and logging in through Facebook. You can even play our free slots on your own favorite tablet computer, such as the iPad.

Amazing

This website is so amazing! I love this so much. I keep on coming back.

remodelingspringfieldmo.com

Awesome Work

Love your work. We will support as much as we can! Your models are seriously legit. If you'd like to check out some of our bigger painting work, feel free to find painters near me

Movie Ratings

Movie Ratings
You'll need an account which you'll have to register should you need to play the motion pictures immediately. The brand new service will probably be publicly examined as quickly as March. Go here for more https://couchtuner.cam/other-brands/layarkaca21.

Kitten Nutrition of Identical Amount

It does not indicate they don't always possess exactly the identical amount of abilities and skills; it simply means that it is far more difficult vitamins for a cat for us to discover the ideal circumstance to check them and make them play basketball in the manner that we want them.

Good sharing.

Good sharing.

nice blog

This is really a nice and informative, containing all the information and also has a big impact on the new technology. Thanks for sharing. Concreting brisbane

Resin

epoxy flooring hoping you will be up and running in a no time. This is really good information you share.

I appreciate your being a

I appreciate your being a perfectionist

Avid Fan now!

This is just so amazing! I just love this website!

Lawn Maintenance

Post new comment

The content of this field is kept private and will not be shown publicly.
CAPTCHA
To help us prevent spam, please prove you're human by typing the words you see here.