Wooden Spiral Bowl


#1

Tried my hand at this:

I used proof-grade medium draft board.

Alt frame:


#2

Did you have to adjust the file any?


#3

Yeah, the file is DXF and the Glowforge doesn’t take that, it seems.

So, I found a free app on the Mac App Store called eDrawing, which opened the file and then allowed me to export to JPG. I then brought that into Inkscape and traced it and exported as SVG. The resulting SVG had the bitmap in it, but I just set that to ignore and the lines to cut.

Took ~35 minutes.


#4

Looks like someone added a SVG version in the comments on Thingiverse.


#5

Ha, I should have looked there first. Ah, well.

Thanks for pointing that out!


#6

Also Inkscape opens dxf and then can be saved to svg.


#7

There are several web-based file converters that will do it, too. Just google “DXF to SVG”


#8

The bowl came out beautifully! What a nice decorating accent.


#9

I SO want to try this.


#10

Made one of these last night - it’s great for holding all of our dice we use for Tenzi! FYI - I brought the DXF into AutoCAD and then sized it appropriately for the cut bed making it as big as I could make it. Kids had fun pulling off the tape on the spiral!



#11

If you make two with one just a bit smaller they should go together and overlap so they are solid all the way down. Particularly interesting with a bowl lathe to make a smooth connection all the way.


#12

Here is the ‘cheap’ version --> 1/8" plywood (about $.65 of material) cut at 190/full and just over 17 minutes on the forge. Picture to follow. :glowforge::sunglasses:

PS - used the SVG file from the comments on Thingiverse.


#13

Of course Inkscape doesall sots of spirals natively so one could have spirals in the spirals, or waves, or spiny hamsters or whatever.


#14

But the problem with inexpensive plywood is that it is susceptible to environmental problems --> warping. Overnight I laid the cut bowl out flat in my kitchen with a light weight applied across the surface, but I guess the drastic change in temperature from my garage (low 40s) to room temperature and loosing some of the dampness --> it took on it’s own form! :glowforge::proofgrade: I suppose Proofgrade would be the best choice.


#15

With that many tight coiled cuts in it, you’ll probably have some of the same warping issues with the proofgrade too… i had done a similar spiral design a couple of months ago, and wound up having to abandon the idea.

I wonder if sealing it would cut down on that?


#16

I saw what you did there . .
:upside_down_face:


#17

Inadvertent, but I’ll take what I can get! :smile:


#18

Like I said Inkscape has a native spiral maker that you could fit a wobble to. Interesting and unexpected it locks the spiral to the original cut line and if the material is thick enough and the bowl shallow enough it will stay together.

I discovered for myself the issues with Home Depot plywood and it took three trys to have this that barely shows the possibilities but I like the overall concept and will incorporate what I have learned.


#19

Nice!