# HELP I'm math challenged !!!!

 Forum topic by jamesrobinson posted 04-01-2009 07:43 PM 1346 views 0 times favorited 6 replies
 jamesrobinson8 posts in 3063 days 04-01-2009 07:43 PM Topic tags/keywords: question math problem I have a project to build a rather long window box/seat unit in a customers house, it will be 274” long (22.10’)for the life of me & hours of guessing I cannot figure out how many cabinet doors and at what width they would need to be to equal the length equally spaced, so assuming we start on either end at 4 1/2” in which equals 9” total and we use an 1 1/2” spacer at the end of each two doors that close to meet in the middle, with hidden euorpean hinges ( the little ones) what would be the size of each cab. door widthwise??? The front of the unit will be 22” tall if that helps any??? I need the doors at ` 15" wide to accomodate two compartments which will have ` 24” wide drawers. please respond to: jamesrobinson999@msn.com desperatelyjames -- www.jamesrobinson.etsy.com

## 6 replies so far

 BlankMan1488 posts in 2891 days #1 posted 04-01-2009 08:04 PM 8 openings each opening 31-13/16” width separated by your 1-1/2” vertical stiles, with the 4-1/2” vertical stiles on each end., 16 doors each 16-3/8” in width, that includes a 1/2” overlap (actually 15/32” overlap) on the face of the stile, but if you leave a 1/16” gap between the doors then the overlap will be a 1/2”. If no overlap is required the door width would be 15-29/32”. Subtract for gap if doors are to be flush mounted in the opening. -- -Curt, Milwaukee, WI jamesrobinson8 posts in 3063 days #2 posted 04-01-2009 08:10 PM thankyou curt !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -- www.jamesrobinson.etsy.com BlankMan1488 posts in 2891 days #3 posted 04-01-2009 09:10 PM James, What’s my commission on this project? ;) Dave, Yes it does, see above. James implied the openings had to be a minimum of 30” to accommodate the 24” drawers, he didn’t say they couldn’t be larger. He did say that he wants them equally spaced so that implied to me that 15” was the minimum and subject to be changed to accommodate the equally spaced requirement. -- -Curt, Milwaukee, WI jamesrobinson8 posts in 3063 days #4 posted 04-01-2009 10:05 PM ok curt- so dave is incorrect in his drawing? if I do 16 doors at 16 3/8’s each then we will have an equal # of pairs??? Another question- since this will be painted couldn’t I cut the doors out of 3/4” sanded plywood instead of joining? -- www.jamesrobinson.etsy.com BlankMan1488 posts in 2891 days #5 posted 04-01-2009 10:42 PM Well, Dave is correct if you use 30” openings, i.e. (2) 15” doors. 8×30 = 240” + 7 stiles 7×1-1/2 = 10-1/2” so you’re at 250-1/2” + (2) 4-1/2” stiles = 259-1/2” so you have a 9th 14-1/2” opening, or 13” with an 8th stile. But with 31-13/16” openings that yields 8×31-13/16 = 254-1/2” + 10-1/2” = 265” + 9” = 274”, exactly what you want. You could use plywood for the doors, probably a good Idea because they’d be dimensionally stable and wouldn’t swell with humidity and be hard to open if they’re to be an inside flush mount, but at that size door maybe not especially if well sealed by paint. But even with painting you can sometimes see the plys on the edge when the door is open. If that’s ok so be it. You could use filler on the edges and sand it smooth to minimize that or edge the doors with a thin strip of solid wood, time consuming though. Or you could make raised panel doors out of MDF or something, seen that done and painted they look great, that’d look really slick. I tend to use solid wood for doors when making cabinets, And even painting the face of the plywood you can sometimes still see the grain patterns, but that may be ok for your application. It all comes down to how you want it to look. I’d suggest before you start making the doors, take a representative piece of plywood you’d be using, sand it, paint it, and see how it looks. You might have to put a bunch of coats of paint on to get it to look as smooth as you want it. I just realized you said 16-3/8” doors so that implies to me they are outside mount with a 1/2” overlap on the stiles and rails, then you’d be more likely see the plys in the edge of any plywood doors even when they’re closed. IMO that wouldn’t look good. -- -Curt, Milwaukee, WI BlankMan1488 posts in 2891 days #6 posted 04-02-2009 04:42 AM Dave, What are you using that only takes you a minute? I do 3-D CAD and it would take longer then that just to enter the pertinent data. -- -Curt, Milwaukee, WI