Several items of wooden have been ruined by not measuring accurately or as well unexpectedly. Often when making a body for a painting I overlook to include the width of the molding when calculating the length to saw and therefore the piece is ineffective.

This is extremely discouraging and triggers a great deal aggravation, especially if the molding is highly-priced and what is le ft is not sufficient to do it about. The total strategy is to evaluate, go back to the calculation to see if it was correctly accomplished and evaluate yet again, so consider your time.

The 3:4:5 Theory

When performing with massive boards, at times you have to lower a piece at precisely 90 degrees. If you only have a small sq. obtainable, this can be a trouble to increase the line to lower throughout the full width of the board as some deviation is just about inevitable. This is wherever the subsequent idea helps when marking out the career.

Now right here is a idea. That is exactly where the 3:4:5 theory can arrive in useful. It is centered upon a mathematical equation these kinds of as 3 squared + 4 squared = 5 squared as a result 9 + 16 = 25 where by the corner throughout the 5 ft facet of the triangle is accurately 90 degrees.

If the width of the board is 4 ft, you make a mark exactly where the slash should be and make a mark 3 ft away from that one. Then you consider a piece of string that has no give (it is not elastic). Measure 9 ft and slice it. Make a mark at the 5 ft measurement.

Clamp the two finishes of string to the board at the abovementioned marks with small g-clamps. Now get the 5 ft mark on the string and make a mark on the board as it will then be just 4 ft (the width of the board) on the other aspect of the board and voila! you have the 90 degrees you desired across the board.

This basic principle is used in a lot of trades, for occasion in street creating or in the creating trade when laying out foundations. The sides of the triangle can be in multiples of 3:4:5 ft, thus it can be 3 inches: 4 inches: 5 inches or 30 ft: 40 ft: 50 ft, it does not subject, the theory stays the very same.

This could finest be illustrated by a sketch but in this scenario a description has to suffice.


Exact measurements are incredibly critical and cannot be more than emphasised, but not only that, as it is essential that a job has to be believed by means of quite meticulously if you get the job done out your possess ideas. Each individual element has to be calculated cautiously, getting into account the width or the thickness of your joining products when operating out the measurements that have to be minimize, for the reducing record. A mistake below can wreck highly-priced items of wooden if one particular works by using unique timber.

A excellent concept would be to have a pal test your proportions as just one is often unable to see a blunder your self. I suppose just about every woodworker has experienced this experience in his do the job.

DEER PARK JOINERY, Bedfordshire, Buckinghamshire, Northamptonshire and Oxfordshire’s first choice for bespoke fitted furniture and carpentry projects. We’re delighted you found our website. We’re here to show you the amazing results you can achieve in your home or office with made-to-measure, customised carpentry solutions tailored to your individual specification. We are a team of friendly, trustworthy craftspeople committed to transforming homes and businesses across Bedfordshire, Buckinghamshire, Northamptonshire and Oxfordshire. You can see why we’ve gained our reputation for superior results in our Portfolio and find out more about what we do in Services.

Useful Links

Leave a Reply

Your email address will not be published.