Lets make some knobs


#1

I use a lots of Jigs in woodworking and always need a knob with a bolt to hold something in, down or what ever. Usually a lathe and bandsaw job. But I have a laser now!!

So designed it so the handle size is Parametric so you can vary the head of the knob size. The bolt is always 1/4 x 20 hex head. Designed in Fusion360. The design in Fusion in only used to generate a DXF so don’t get confused by the fact that every component is .1 inch thick. You just need the lines. There is a specific sketch that is labeled " 4 dxf out" that has everything in it you need to output.

The 2 parametric items are:
“hor_len” - controls the handle size in inches
"Fillet" - controls the curveyness(?) of the handle

4 layers of Lowes ply .2175 thick for my purposes
top - nice handle shape and has hex cutout for the bolt head.
next - same handle shape but 1/4 hole for bolt shaft
bottom 2 - spacers to hold the handle top out (just comfort)

A little bit of 2P-10 to glue everything into a stack and you are ready to go.

The zip contains:
1 - fusion 360 file
2 - dxf output from fusion for Inkscape
3 - svg out of Inkscape for GF

I welcome comments / improvements

parametric star knob sliced v4.zip (385.6 KB)


#2

Photos don’t load


#3

Thanks for documenting and sharing the file. Yes. Easy knobs for bolts and nuts is perfect.

Ah. thanks for fixing the link. Great!


#4

Just fixed that
sorry


#5

Thanks for this. Once my shop is back together, these will be useful.


#6

I’ve 3d printed and cnc’d knobs but had not thought to forge them. I’ll have to cut a few so I will have done knobs on all types of digi-fab tools.


#7

Haven’t needed knobs, but that doesn’t mean I won’t! Great idea!


#8

Great work and thank you for sharing the file!


#9

Thanks for the files.


#10

Add an engraved wooden face or acrylic and you have a fancy drawer pull.


#11

Yep. Me too. 3d printing just takes so long. As old as I am I’ll forget what I was wanting them for by the time they finish printing. And these can be made out of any old flat scrap.


#12

Well you know I hadn’t thought about that but that would certainly work for some drawers I’m building in the shop.


#13

Thanks for sharing this! I’ll probably be using it for some woodworking jigs.


#14

Thanks for your generous sharing!


#15

Neat! Thanks for sharing the files and outlining your process.


#16

So I’m using bigger bolts, I modified your file and added two new parameters,

threadDia (inches): this is the diameter of the threads. You get this by measuring the width of the threaded part of the bolt.

boltHeadMin (inches): this is the measurement from the face of one side of the bolt head to the other.

Here is a public link to the file: http://a360.co/2piRCzi

Here is a downloadedable Zip file. @benkeller3 created a scketch titled " for dxf output" that is the sketch that you output.

parametric star knob sliced v4 DPMv1 v0.zip (334.2 KB)


#17

Great job. That’s what makes us a community building on each other.


#18

OK, i needed to make another small knob. I found some problems in my previous file.

This is the best one to use now.

UpdatedKnobParametric.zip (336.4 KB)


#19

Very nice, thanks for the share.