{"id":112,"date":"2017-01-19T22:42:48","date_gmt":"2017-01-20T06:42:48","guid":{"rendered":"http:\/\/www.ceci.at\/notes\/?p=112"},"modified":"2017-01-19T22:42:48","modified_gmt":"2017-01-20T06:42:48","slug":"quarks-kit-arrived-drilling-in-mdf","status":"publish","type":"post","link":"https:\/\/www.ceci.at\/notes\/2017\/01\/19\/quarks-kit-arrived-drilling-in-mdf\/","title":{"rendered":"Quarks Kit Arrived — Drilling in MDF"},"content":{"rendered":"

Due to weather (or so is the official story) My\u00a0Quarks kit<\/a>\u00a0finally arrived, after spending two weeks on icy roads in FedEx Trucks going across the country.<\/p>\n

Flat-Pack Kits<\/h2>\n

DIY Soundgroup<\/a>\u00a0was great to deal with and the kit arrived well packaged:<\/p>\n

\"\"<\/a><\/p>\n

The kit includes two “flat packs”, which means CNC routed MDF pieces with rabbets in them and a front baffle with rounded edges and cutouts for the drivers already made. All the other pieces are included as well: Drivers, parts for the crossover (passive circuitry implementing highpass\/lowpass filters for the woofer and the tweeter), the port tube, screws, speaker gasket, etc…<\/p>\n

The only thing you need to do besides gluing pieces together for the flat-pack is to drill holes for the binding posts (the pieces you connect your speaker wires to).<\/p>\n

Here is an over-engineered way of doing this:<\/p>\n

Holes For Binding Posts<\/h2>\n

Since there is still a moratorium on power tools in our garage, I decided I can at least sneak out into the garage and glue the flat packs together. — The only thing left to do before this is to drill two holes in the back for the binding posts<\/a>, which is where you will eventually connect the speaker wire once the project is done. Since hole drilling can be done with a relatively quiet hand-held corded drill we can circumvent the power tool moratorium here…<\/p>\n

The binding posts require you to drill two 7\/32″ holes. — Great, who comes up with these oddball\u00a0fractional numbers? — For precise drilling in wood I own a set of brad point drill bits. These are drill bits with a sharp tip in the center, that makes it easy to very precisely position the drill. They also have flared edges to supposedly give you a better cut. (If you still can’t picture what a brad point drill bit is,\u00a0here<\/a>\u00a0is an example for one…)<\/p>\n

Problem: I don’t have a 7\/32″ brad point drill bit. However, I own another set very similar to\u00a0this set of drill bits<\/a>\u00a0that does include a 7\/32″ bit.<\/p>\n

What i ended up doing<\/p>\n