Since you can't rely on the adhesive for permanence, it is recommended to either miter or at least support the ends of the top piece by applying the Econospace to the glass.
Adhere Econospace to the glass, not to the frame.
Adhere the Econospace flush with and to the edge of the glass rather than to the frame to insure the best possible bond and maximum engagement over the face of the art or decorative backing as shown above. The glass is the best surface for bond permanence. Do not "Center" the glass in the frame by applying theEconospace half on and half off the glass. The weight of the glass will shear the adhesive on the bottom spacer and the top spacer will only be held on by half the adhesive. It will sag.
Framespace & Econospace may be stacked
Framespace can be stacked as shown to achieve some very unique and effective frame jobs. All Econospace can be stacked as shown above. You may find it less expensive, easier, and more attractive to use Framespace in one of the larger sizes.
Fitting the Frame
Stack up the backing, the art, and glass (with the spacers attached) face up on your fitting table. Check for dust and critters. In a wood frame, place the frame down over the entire package then flip it over and fit as usual. In a metal frame, join three sides then slide the whole package in face up. Flip it over and install the fourth side.
When framing unmounted paper art, it is not advisable to cover the edge of the art with the spacer as even slight pressure against the art will cause it to buckle! The art will expand and contract with changes in humidity and it must be allowed to move freely in the frame to prevent buckling. The art may also be abraded by the spacer rubbing on the face of the art. A more appropriate method would be to "Float" the art as shown below.
In metal frames, instead of using spring clips, bond strips of foam board or mat board to the edge of the backing to almost fill up the space. If they are tight the art and the backing will buckle! (See below).
In wood frames, don't apply any pressure when installing diamond points, etc. Leave the entire package a little loose to prevent the art and backing from buckling. (See below)
The Framespace Coin Trick
- Cut two pieces of SSB glass, one mirror, and one backing board all the same size with 3/32 inch frame allowance.
- Clean the Mirror and both sides of both pieces of glass and set aside to gather dust.
- Clean the frame rabbet and maybe even hit it with a light coat of matte spray if it looks like it will be flaky.
- Lay out the coins on the backing board to determine exact spacing. Outline the coins with a pencil to make bulls eyes. Lay one of the pieces of glass on it and set it aside for more dust collection.
- Clean and polish both sides of the coins as necessary. Remember that silicone glue will not stick to finger oils.
- Make a small handle out of masking tape like this:
Then stick it lightly to the front of the coin like this:
Line the handle up with some prominent feature on the coin like "Top."
- Apply an almost continuous string of tiny beads of silicone to the back of the coin on just the very edge. Be careful here and remove any big globs because they will show very nicely in the mirror. Hold the coin just slightly above the glass and drop it over the bulls eye. Don't touch it! If you move it even a little bit the glue will smear and show. The weight of the coin is enough to flatten the glue. Wait at least three hours before handling the glass. After the glue has cured, hold the coin down with tweezers, or something similar, when you remove the tape handle. Wait until tomorrow to deliver the frame job to let the glue finish curing.
- Attach regular FRAMESPACE 1 to the top piece of glass and FRAMESPACE 3 or 5 on the glass with the coin on it. Stack both up on the mirror and backing. (See cross-section diagram above.) Chase dust for a while and set the frame down over the glass and spacer assembly. Take it all apart, remove the last of the dust and try it again. Fit and hang as a usual frame job.
Advise your customer that you are going to use silicone glue on the coin. It is completely removable with lacquer thinner but some collectors will not stand for glue on their coins. Find another method for framing their coins. Also warn them that if they look closely they're liable to see some glue in the mirror. Show them what a nice job you did on the sample frame and explain how tricky a job it is. Cover yourself.