Hi. Im designing a fretboard for a guitar and I want to put side dots for each fret using this equation:
"DistanceFromNut" = "ScaleLength" - ( "ScaleLength" / ( 2 ^ ( n / 12 ) ) )
How do I get the nth instance in a pattern? Can this even be done or do I need to make some kind of variable pattern? Thanks.
Hi Isak
Its pretty straight forward to create a sketch with a dimension that drives the position
eg
I had a similar problem and I was hoping I could then linear pattern the sketch varying the position dimension like this
unfortunately when solidworks does this (so my VAR told me) the sketch is updated but the equations aren't re-evaluated, which is in my view a shame.
other options, copy/paste the sketch and just do each one manually
or how about a table driven pattern?
you can use a spreadsheet to create your numbers and get them into a txt file
first you have to create a coordinate system so it knows which is x and y, you can then open your data
Hope that helps
Just had another idea, thats quick and parametric but means you'd have separate parts for each of these
Ive only dropped in 1 sketch
use a design table to create as many configurations as you need, just controlling the n dimension
I attach the part, Im on 2015
Me again!
This is a pretty interesting solution
buried under the spline tool in the sketch toolbar is the Equation Driven Curve Function
I entered the formula you gave ( I have no idea how many frets or what length you require) but these values are editable by double clicking the curve created.
I then created a number of points and used a horizontal ordinate dimension from the origin 1,2,3...
Then I made the points coincident with the curve. I added horizontal construction lines so you can see the spacing produced. Does it look about right?
So and this is the nice part..
we can now use my very first idea of a linear pattern.
Solidworks Forum, better than the Sunday crossword ;p
Took me a while to wrap my head around this but it does seem to do the trick. Thanks for the help. Here's the result. Pretty neat.
That looks great, glad I could help. Yep it's a bit of a head twister. I think there is an enhancement request for a function driven pattern, or allowing equations to update in the sketch when it varies or even just allowing the equation driven spline to be driven through equations,,, oh dear! - that sentence is even more of a head twister
So and this is the nice part..
we can now use my very first idea of a linear pattern.
Solidworks Forum, better than the Sunday crossword ;p