Not A Math Wiz - Router Forums
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post #1 of 26 (permalink) Old 02-28-2016, 07:32 PM Thread Starter
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Default Not A Math Wiz

Ok, I have never been accused of being sart. Here is my issue. I build a lot of furniture type projects from plans but usually modify the dimensions to suit the space of the area where they end up going,. My issue is since I am not great at math I wind up wasting a lot of material and have to redo stuff a few times. Does anyone know of an app or something that would aid in taking dimensions from a plan and doing the calculations for you so I don't burn off the new brain cells I still have and kill less trees than I have to? I have tried sketch but don't have the time to devote to learning it or I would have enrolled in CAD course in school.


Thanks smart people.
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post #2 of 26 (permalink) Old 02-28-2016, 08:05 PM
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I don't think there is a magic bullet here. You have to go through each piece and resize it. Personally, sketchup works for me and that's how I would do it. It's one of those apps that if you see someone using it you get it but with out some reference points, it can be baffling. There are lots of good tutorials out there.

Measure twice, cut once and CROSS OUT THE WRONG MARKS.
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post #3 of 26 (permalink) Old 02-28-2016, 08:14 PM
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I'm not aware of one either especially since you probably aren't changing all the dimensions such as height for example. You get better at something with practice.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #4 of 26 (permalink) Old 02-28-2016, 08:16 PM
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I've never used a bought print before, I thought they came with a mat list.
Can't speak for anyone else, but it isn't worth the time trying to figure an exact, too many variables and possible errors to crop up, (pour moi)
wrong tool setup, milling green wood that shrinks prior to assembly, dropping to concrete floor, etc. I tend to figure about 15% above what I believe I need, which includes, if all goes well, rough cut dim (for acclimation then final dim) and blade width. If all goes well I have left overs for some other thingy.

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post #5 of 26 (permalink) Old 02-28-2016, 09:30 PM Thread Starter
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Thanks guys. In my particular case my Sister in law liked something she saw on Ana white and I owe her a bday present so volunteered to make her something. Ana White usually has incorrect cultists anyway. In this case the piece was 74" long but SIL wanted 60, 16 1/2 wide but wanted 15, 30" tall but wanted 37. All easy enough so far but when you get to the actual shelves the cut list said 63 1/2, which was wrong to start with and I am having a dickens of a time figuring the correct shelf length. I come up with either 51 or 49. Think I'll just do 51 and if it isn't right just cut it down to 49. Easier than breaking out the board stretcher.
Just thought there could be some app out there where you enter in dimensions that are in plans and it would calculate the new cutlist if you wanted to modify the size.


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post #6 of 26 (permalink) Old 02-28-2016, 09:45 PM
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If you took the dimensions you have and draw it in SketchUp it will give you most of the other dimensions based on the ones you know. If I am not mistaken. Please correct me if I am wrong.

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post #7 of 26 (permalink) Old 02-28-2016, 10:19 PM Thread Starter
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I downloaded the trial sketch up just to check it out and could barely make it passed the lady in the overalls. I am going to take some time and learn it. I'm sure it is a very productive tool. I'm still using protractors, 3 way rulers and compasses.


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post #8 of 26 (permalink) Old 02-28-2016, 10:27 PM
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Robert,
I recommend that you invest the time to learn Sketchup. Start here:

Watch a while, then draw a while. You don't have to draw the entire project, but you can soon learn to draw up the parts that you are unsure about and how they fit together.

Eventually, you'll probably want to depart from plans that you buy and design your own. Knowing how to use Sketchup will pay big dividends down the road. I seldom build anything that I don't draw up first. The process of building it piece by piece in Sketchup saves many mistakes in the shop.
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post #9 of 26 (permalink) Old 02-28-2016, 11:36 PM Thread Starter
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Thanks guys. This seems to be the next step in my woodworking progression. What I've mostly been doing is finding free stuff on Ana white then modifying. Most of her stuff uses pocket holes, which don't get me wrong, are great but want to step up my game a bit. And getting tired of relying on PH. Joinery. Either that or using drafting paper and designing my own. I take it sketch up will do most of the heavy lifting for you and provide different angles and views.
Hoping I can get to the point of learning it well enough in my 30 day trial to purchase it and actually use it.


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post #10 of 26 (permalink) Old 02-29-2016, 12:17 AM
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Quote:
Originally Posted by RBreland View Post
Hoping I can get to the point of learning it well enough in my 30 day trial to purchase it and actually use it.
You don't have to purchase anything. After your 30 day trial is over, you can still continue using the free version of Sketchup, which does have some reduced functionality, but will still do everything I've ever needed. It is PLENTY functional for a woodworker's needs. By the time you outgrow the free version of Sketchup, we'll be asking YOU for Sketchup advice. So, don't be afraid to invest your time in it. You won't be sorry.

“We should be careful to get out of an experience only the wisdom that is in it and stop there lest we be like the cat that sits down on a hot stove lid. She will never sit down on a hot stove lid again and that is well but also she will never sit down on a cold one anymore.” - Mark Twain
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