[This is part of my ARCHWAY-101 series.]
I used these few simple layout techniques to find the exact spot where the Flex Trim needs to end. This allowed me to drop the keystone right in place after the I installed the Flex Trim.
But first, here’s a list of the materials I used to make the keystone.
Keystone Materials Inventory
You can use scrap material left over from making the arch pilasters to make the keystones, so I won’t bother calculating the costs.
1. Abacus MDF-100 The top of this keystone is viewed from the upstairs landing, so I made this abacus (that acts as a cap) routered a very small ovolo profile on the outside edge of this piece of 1/4″ thick mdf and t
I normally don’t router anything, but this was the best way to get a delicate detail on such a thin piece of flat-stock.
2. Bed Molding CM-001 Look closely at the image above, and you can see that I wrapped this bed molding around a block of MDF-300, Item 3 in the picture.
3. Fascia MDF-300 This is made from a small block of 3/4″ mdf.
4. Keystone Foundation MDF-300 Cut two identical pieces of mdf and glue them together. Sand the edges. That’s all there is to it.
5. Panel Molding PM-001 I dressed up the edges of my keystone with this little panel molding. It is not a design necessity, just a little extra detail.
If you make your keystone without this panel molding, then reduce the size of the lower fascia by about 1/8″.
Cartouche Ornament This delicate applique I ordered from Decorators Supply. You should know that Decorators Supply has strict minimum order requirements, and so you can’t order just one or two at a time.
There are however lots of other companies that sell architectural ornaments, a quick search will turn up plenty.
How to Layout the Keystones
The following pictures do a better job of describing the process than if I were to blather on. So I’ll just stop right here and let the pictures do the talking.
How to Build ARCHWAY-101 Series
4. How to Build ARCHWAY-101 Part 4: Keystone Materials and Layout