Charles Rennie Mackintosh box

By AndrewWR
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BY-NC-SA 4.0 License
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Updated Sun Jan 29 2023

A sycamore box with a Charles Rennie Mackintosh rose design on the lid and square through tenon joinery to continue the Mackintosh theme (He was fond of lines of squares in his furniture) This is my second project with Shaper Origin and includes a few 'firsts': First time using sycamore, first epoxy inlay, first time using Rubio Monocoat. All things considered, I'm happy with how I negotiated the learning curve on this one.

> 2 hr
Easy

40

Storage & Organization

Files Included (3)

  • CRM box mortice.svg

    4 kB
  • CRM box Tenon.svg

    3 kB
  • CRM lid engraving.svg

    6 kB

Materials

12mm thick PAR hardwood (Sycamore in this instance) 2 each of 200mmx95mm, 140mmx95mm & 190mmx134mm.

epoxy resin (clear and black).

Water based wood dyes.

Tools

Shaper Origin & Workstation

3.175mm (1/8" collet)

'unicorn' engraving bit (2mm ball nose)

6mm or 8mm upcut bit

2mm and 1.5mm 3.175mm shank upcut bits (flutes must be at least 12mm long)

Instructions

The mortice and tenon joint SVGs are designed to be positioned, anchored to the bottom left corner, at x,y = -2mm,-2mm. Tenons are cut end on (obvs!) using Workstations built in alignment dowels and a 2mm upcut bit in a 1/8" collet. Mortices are cut flat on Workstation's rest using a 6mm bit to cut the rabbet first, then a 2mm bit to pocket out the mortices and finally a 1.5mm bit to get the corners a bit more square. The top and bottom have 6mm deep rabbets all around, cut to size with the on-tool rectangle drawer. I cut the bottom first, oversize, and snuck up on a friction fit, dialing it in 0.2mm all around for the top. The engraving was cut with a 1 mm radius unicorn bit to a depth of 2mm. This was painted with clear epoxy (I used Epodex eco) to seal it, then filled with black epoxy using a syringe and a blunt needle. I didn't completely fill the channel so the epoxy produced a natural concave meniscus and, Epodex being a little more viscous than Total Boat, the gloss finish has enough surface undulation to catch the light and give a more lead-like effect. (CRM's rose motif was originally for leaded, stained glass) That underfilled channel also means the gloss epoxy finish remains when the surface is sanded, which I like. The water based dyes were painted on, relying on the epoxy channel to stop 'bleed'. Three shades of red were used (Red, Raspberry and Antique pink) and one shade of green, lightened where necessary by dilution. The lid is not hinged because I couldn't find appropriate hardware for a lid that is smaller than the box. Suppliers (for UK Shaper users) Hardwood from mwilson633 on ebay router bits from Rennie Tools epoxy from Epodex wood dyes from Woodeedoo via search_box_online on ebay (10ml testers)


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