Need some circles printing.

[skipdiver]

I need to print out some circles with segmented lines that i can stick to wood. Been doing them with a pencil and compass but i use a few and thought i would just print out a load for future use. What programme would be best for this application?

Ta!

 

[novocaine]

any CAD application will be a good start. autodesk are doing free for hobbyist stuff like 123d (which is really 3d but I'm sure you can work in 1 plane) that will have an array function instead of drawing every line.

 

[NazNomad]

If I make clocks, I just download a 12 segment circle pic from the internet.

What are you making? How many segments?

 

[Cordy]

What size the circles ?

 

[transatlantic]

Sketchup is also anothe place to start. Can you show an example of what you mean? Do you mean just drawing polygons?

https://help.sketchup.com/en/article/3000201

 

[skipdiver]

I am making wooden cogs with 20 teeth, that are 90mm diameter. I have made a jig for my router that has a dovetail bit in it. Need to move the circle on by a set amount, so will stick the template to the first one, so i can rotate it 18 degrees to a register mark each time before cutting. I will maybe make a little pawl to locate in the teeth eventually but i'm at the prototype stage and it's easier to do it with a glued on pattern at the moment until i fine tune it.

Thanks for the info so far.

 

[novocaine]

so an indexing plate.

can I suggest an improvement? (I'm going to anyway)
cut a disc bigger than the first cog and use a marker on that instead of on the cog. improved accuracy.

anyways, here you go. just check it for scale on your printer.

 

[mayo.mick]

Is this any use to you? http://www.blocklayer.com/trig/circles.aspx

Should be able to print out

 

[AndyT]

If you want templates for making wooden gears, Matthias Wandel is your man:

https://www.woodgears.ca/gear_cutting/template.html

 

[skipdiver]

Thanks all, plenty to work with there.

novocaine, that's a good idea. I can attach a larger cog at the end of the jig. I will add that to my improved version, although it is fairly accurate now at the mock up stage and i made a batch yesterday that were near to spot on. Always room for improvement though.

 

[skipdiver]

Thanks Andy, already looked at that and they are not what i want. I said cogs but it's a ratchet that i'm making.

 

[novocaine]

let me know what you need and I'll draw them up for you later when I get chance. joys of being an ex designer, I still have a few toys to play with.

 

[skipdiver]

I just need some circles divided into 20 segments, that i can print out. The ratchet is 90mm diameter but as you say a larger one would do, though i'm not sure i can fit one much larger on my jig without modifying it. Anyway, i'll go have a play and get back to it later.

 

[novocaine]

oh in that case, I've done it above. copy the attachement and print it. thats a 90mm circle with 20 divisions.

 

[CHJ]

Bill Smiths Index Plate Templates (linked on Here)

 

[transatlantic]

so an indexing plate.

can I suggest an improvement? (I'm going to anyway)
cut a disc bigger than the first cog and use a marker on that instead of on the cog. improved accuracy.

anyways, here you go. just check it for scale on your printer.

Honestly - could you have made it any smaller?

http://www.blocklayer.com/circle-divider.aspx

 

[Phil Pascoe]

http://www.cgtk.co.uk/metalwork/reference/divider

 

[CHJ]

http://www.cgtk.co.uk/metalwork/reference/divider

That's a useful tool.

 

[skipdiver]

Thank you all, some very useful sites there. Will keep me busy.

 

[NazNomad]

If you want templates for making wooden gears, Matthias Wandel is your man:

https://www.woodgears.ca/gear_cutting/template.html

Ditto this ...