creating laser cut plywood structures with finger joints
The only way I can imagine "dovetails" that used entirely vertical cuts
would be if you used them to connect to pieces in the same plane, like the
way a jigsaw puzzle goes together. (You could interpret this as a very
short non-tapered sliding dovetail, I suppose.) Normal dovetails at a
corner have a tailboard, which features flat cuts, and a pinboard, which
requires angled cuts. Here's an example from a project I made years ago:
https://adrianmakes.wordpress.com/2012/12/04/file-cabinet-case-dovetails/
On Sun, Feb 15, 2026 at 9:33 AM Jon Bondy jon@jonbondy.com wrote:
Adrian:
are the "dovetails" that are generated by BOSL2 straight vertical cuts?
They look so to me.
Jon
On 2/15/2026 9:14 AM, Adrian Mariano via Discuss wrote:
Dovetails would require through cuts at an angle, not perpendicular to the
material surface (for making the pin board). Can laser cutters change the
angle of the laser?
On Sun, Feb 15, 2026 at 8:52 AM William F. Adams via Discuss <
discuss@lists.openscad.org> wrote:
On Sunday, February 15, 2026 at 03:02:15 AM EST, gene heskett via Discuss
discuss@lists.openscad.org wrote:
Finger joints, or even dovetails or butterfly's might be easier to do in
LinuxCNC with a common text editor. I've done several pieces of green
and green style furniture that way, then converted it to wood on my
milling machines, all run by LinuxCNC from starting to make chips to
finish application.
Finger (or box) joints and butterfly joints work well on a laser since
they are 2D through cuts --- I'm kind of stumped as to how one would do
dovetails since they require variable depth pockets w/ angled sides --- are
there readily available and affordable at a hobbyist/individual user level
which supports the kind of cutting needed for dovetails?
William
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I am talking about code like
partition(spread=12, cutpath="dovetail", size=[1200, 400, 400])
On 2/15/2026 9:52 AM, Adrian Mariano wrote:
The only way I can imagine "dovetails" that used entirely vertical cuts would be if you used them to connect to pieces in the same plane, like the way a jigsaw puzzle goes together. (You could interpret this as a very short non-tapered sliding dovetail, I suppose.) Normal dovetails at a corner have a tailboard, which features flat cuts, and a pinboard, which requires angled cuts. Here's an example from a project I made years ago:
https://adrianmakes.wordpress.com/2012/12/04/file-cabinet-case-dovetails/https://urldefense.proofpoint.com/v2/url?u=https-3A__adrianmakes.wordpress.com_2012_12_04_file-2Dcabinet-2Dcase-2Ddovetails_&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=AsrE-c7ZR7B2Kyr3qgfvvppkCEBVsNmwEMndcrRSuOI&m=itqjBjtyH2vgWw81gzwMRVtUEJ0Pf4N4Q4ReGGM5nCEfr1q6N1RA8PPVqg4tpt1X&s=KCkkJ_qk7EAaZEr2xAshFjiktbFEOUv0lyHWNFYfBYk&e=
On Sun, Feb 15, 2026 at 9:33 AM Jon Bondy <jon@jonbondy.commailto:jon@jonbondy.com> wrote:
Adrian:
are the "dovetails" that are generated by BOSL2 straight vertical cuts? They look so to me.
Jon
On 2/15/2026 9:14 AM, Adrian Mariano via Discuss wrote:
Dovetails would require through cuts at an angle, not perpendicular to the material surface (for making the pin board). Can laser cutters change the angle of the laser?
On Sun, Feb 15, 2026 at 8:52 AM William F. Adams via Discuss <discuss@lists.openscad.orgmailto:discuss@lists.openscad.org> wrote:
On Sunday, February 15, 2026 at 03:02:15 AM EST, gene heskett via Discuss <discuss@lists.openscad.orgmailto:discuss@lists.openscad.org> wrote:
Finger joints, or even dovetails or butterfly's might be easier to do in
LinuxCNC with a common text editor. I've done several pieces of green
and green style furniture that way, then converted it to wood on my
milling machines, all run by LinuxCNC from starting to make chips to
finish application.
Finger (or box) joints and butterfly joints work well on a laser since they are 2D through cuts --- I'm kind of stumped as to how one would do dovetails since they require variable depth pockets w/ angled sides --- are there readily available and affordable at a hobbyist/individual user level which supports the kind of cutting needed for dovetails?
William
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On Sunday, February 15, 2026 at 10:34:25 AM EST, jon jonbondy.com via Discuss discuss@lists.openscad.org wrote:
I am talking about code like
partition(spread=12, cutpath="dovetail", size=[1200, 400, 400])
Could you post an image?
Or a compleat minimal code sample which folks can run?
William
https://github.com/BelfrySCAD/BOSL2/wiki/partitions.scad
On 2/15/2026 10:35 AM, William F. Adams via Discuss wrote:
On Sunday, February 15, 2026 at 10:34:25 AM EST, jon https://urldefense.proofpoint.com/v2/url?u=http-3A__jonbondy.com&d=DwIGaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=AsrE-c7ZR7B2Kyr3qgfvvppkCEBVsNmwEMndcrRSuOI&m=IG4D5MXGVQjVpqWtVHp-sf1J5NNjrquIT97mbQRa8sYTBhp5gWVCT_goTR5L51Io&s=gvFqPakTPBYh2kHdkO20gnGbcLINFYNOk9o8I6voVbU&e= via Discuss discuss@lists.openscad.org wrote:
I am talking about code like
partition(spread=12, cutpath="dovetail", size=[1200, 400, 400])
Could you post an image?
Or a compleat minimal code sample which folks can run?
William
OpenSCAD mailing list
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On 2/15/26 09:09, larry via Discuss wrote:
On Sun, 2026-02-15 at 13:51 +0000, William F. Adams via Discuss wrote:
On Sunday, February 15, 2026 at 03:02:15 AM EST, gene heskett via
Discuss discuss@lists.openscad.org wrote:
Finger joints, or even dovetails or butterfly's might be easier to
do in
LinuxCNC with a common text editor. I've done several pieces of
green
and green style furniture that way, then converted it to wood on my
milling machines, all run by LinuxCNC from starting to make chips
to
finish application.
Finger (or box) joints and butterfly joints work well on a laser
since they are 2D through cuts --- I'm kind of stumped as to how one
would do dovetails since they require variable depth pockets w/
angled sides --- are there readily available and affordable at a
hobbyist/individual user level which supports the kind of cutting
needed for dovetails?
I think the clues in Gene's comment might be LinuxCNC and milling
machines.
This is also true, I live in both worlds but I've not yet seen a laser
cutter with 6 axises. My printers are 3d of course, but the milling
machines are 4, almost mandatory so I have a grizzly G0704 setup as
XYZA, and a 6040 gantry setup as XYZB. Where A & B represent home made
500 rev tracking rotary's on the X for the G0704 and identical as B,
rotating on the Y axis for the gantry machine. They are 3NM closed loop
stepper/servo's mounted to drive 5/1 worms. Both have the same printed
chuck. Works fine, micron accuracy at 500 revs.
Cheers, Gene Heskett, CET.
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Don't poison our oceans, interdict drugs at the src.
That's the jigsaw puzzle type cut I was referring to. It's not what people
normally mean if they say "dovetail joint". (Revar is finishing up a
major update/change to partitioning in BOSL2, FYI.)
On Sun, Feb 15, 2026 at 10:33 AM jon jonbondy.com jon@jonbondy.com wrote:
I am talking about code like
partition(spread=12, cutpath="dovetail", size=[1200, 400, 400])
On 2/15/2026 9:52 AM, Adrian Mariano wrote:
The only way I can imagine "dovetails" that used entirely vertical cuts
would be if you used them to connect to pieces in the same plane, like the
way a jigsaw puzzle goes together. (You could interpret this as a very
short non-tapered sliding dovetail, I suppose.) Normal dovetails at a
corner have a tailboard, which features flat cuts, and a pinboard, which
requires angled cuts. Here's an example from a project I made years ago:
https://adrianmakes.wordpress.com/2012/12/04/file-cabinet-case-dovetails/
https://urldefense.proofpoint.com/v2/url?u=https-3A__adrianmakes.wordpress.com_2012_12_04_file-2Dcabinet-2Dcase-2Ddovetails_&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=AsrE-c7ZR7B2Kyr3qgfvvppkCEBVsNmwEMndcrRSuOI&m=itqjBjtyH2vgWw81gzwMRVtUEJ0Pf4N4Q4ReGGM5nCEfr1q6N1RA8PPVqg4tpt1X&s=KCkkJ_qk7EAaZEr2xAshFjiktbFEOUv0lyHWNFYfBYk&e=
On Sun, Feb 15, 2026 at 9:33 AM Jon Bondy jon@jonbondy.com wrote:
Adrian:
are the "dovetails" that are generated by BOSL2 straight vertical cuts?
They look so to me.
Jon
On 2/15/2026 9:14 AM, Adrian Mariano via Discuss wrote:
Dovetails would require through cuts at an angle, not perpendicular to
the material surface (for making the pin board). Can laser cutters change
the angle of the laser?
On Sun, Feb 15, 2026 at 8:52 AM William F. Adams via Discuss <
discuss@lists.openscad.org> wrote:
On Sunday, February 15, 2026 at 03:02:15 AM EST, gene heskett via
Discuss discuss@lists.openscad.org wrote:
Finger joints, or even dovetails or butterfly's might be easier to do
in
LinuxCNC with a common text editor. I've done several pieces of green
and green style furniture that way, then converted it to wood on my
milling machines, all run by LinuxCNC from starting to make chips to
finish application.
Finger (or box) joints and butterfly joints work well on a laser since
they are 2D through cuts --- I'm kind of stumped as to how one would do
dovetails since they require variable depth pockets w/ angled sides --- are
there readily available and affordable at a hobbyist/individual user level
which supports the kind of cutting needed for dovetails?
William
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Ah. The name "dovetail" confused me.
:)
On 2/15/2026 12:03 PM, Adrian Mariano wrote:
That's the jigsaw puzzle type cut I was referring to. It's not what people normally mean if they say "dovetail joint". (Revar is finishing up a major update/change to partitioning in BOSL2, FYI.)
On Sun, Feb 15, 2026 at 10:33 AM jon jonbondy.comhttps://urldefense.proofpoint.com/v2/url?u=http-3A__jonbondy.com&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=AsrE-c7ZR7B2Kyr3qgfvvppkCEBVsNmwEMndcrRSuOI&m=S9ABZ4D70tZtztWifun5LFmSVdMbkfXKNvaxEirwTwLFNPbKc2Hzc4BNPNYzrWlD&s=HlDgy73rvaHPBVo4b-CXIJSOcMqmliPaWdqMtcAQ0Yo&e= <jon@jonbondy.commailto:jon@jonbondy.com> wrote:
I am talking about code like
partition(spread=12, cutpath="dovetail", size=[1200, 400, 400])
On 2/15/2026 9:52 AM, Adrian Mariano wrote:
The only way I can imagine "dovetails" that used entirely vertical cuts would be if you used them to connect to pieces in the same plane, like the way a jigsaw puzzle goes together. (You could interpret this as a very short non-tapered sliding dovetail, I suppose.) Normal dovetails at a corner have a tailboard, which features flat cuts, and a pinboard, which requires angled cuts. Here's an example from a project I made years ago:
https://adrianmakes.wordpress.com/2012/12/04/file-cabinet-case-dovetails/https://urldefense.proofpoint.com/v2/url?u=https-3A__adrianmakes.wordpress.com_2012_12_04_file-2Dcabinet-2Dcase-2Ddovetails_&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=AsrE-c7ZR7B2Kyr3qgfvvppkCEBVsNmwEMndcrRSuOI&m=itqjBjtyH2vgWw81gzwMRVtUEJ0Pf4N4Q4ReGGM5nCEfr1q6N1RA8PPVqg4tpt1X&s=KCkkJ_qk7EAaZEr2xAshFjiktbFEOUv0lyHWNFYfBYk&e=
On Sun, Feb 15, 2026 at 9:33 AM Jon Bondy <jon@jonbondy.commailto:jon@jonbondy.com> wrote:
Adrian:
are the "dovetails" that are generated by BOSL2 straight vertical cuts? They look so to me.
Jon
On 2/15/2026 9:14 AM, Adrian Mariano via Discuss wrote:
Dovetails would require through cuts at an angle, not perpendicular to the material surface (for making the pin board). Can laser cutters change the angle of the laser?
On Sun, Feb 15, 2026 at 8:52 AM William F. Adams via Discuss <discuss@lists.openscad.orgmailto:discuss@lists.openscad.org> wrote:
On Sunday, February 15, 2026 at 03:02:15 AM EST, gene heskett via Discuss <discuss@lists.openscad.orgmailto:discuss@lists.openscad.org> wrote:
Finger joints, or even dovetails or butterfly's might be easier to do in
LinuxCNC with a common text editor. I've done several pieces of green
and green style furniture that way, then converted it to wood on my
milling machines, all run by LinuxCNC from starting to make chips to
finish application.
Finger (or box) joints and butterfly joints work well on a laser since they are 2D through cuts --- I'm kind of stumped as to how one would do dovetails since they require variable depth pockets w/ angled sides --- are there readily available and affordable at a hobbyist/individual user level which supports the kind of cutting needed for dovetails?
William
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On 2/15/26 12:04, Adrian Mariano via Discuss wrote:
That's the jigsaw puzzle type cut I was referring to. It's not what people
normally mean if they say "dovetail joint". (Revar is finishing up a
major update/change to partitioning in BOSL2, FYI.)
On Sun, Feb 15, 2026 at 10:33 AM jon jonbondy.com jon@jonbondy.com wrote:
I am talking about code like
partition(spread=12, cutpath="dovetail", size=[1200, 400, 400])
On 2/15/2026 9:52 AM, Adrian Mariano wrote:
The only way I can imagine "dovetails" that used entirely vertical cuts
would be if you used them to connect to pieces in the same plane, like the
way a jigsaw puzzle goes together. (You could interpret this as a very
short non-tapered sliding dovetail, I suppose.) Normal dovetails at a
corner have a tailboard, which features flat cuts, and a pinboard, which
requires angled cuts. Here's an example from a project I made years ago:
https://adrianmakes.wordpress.com/2012/12/04/file-cabinet-case-dovetails/
https://urldefense.proofpoint.com/v2/url?u=https-3A__adrianmakeswordpress.com_2012_12_04_file-2Dcabinet-2Dcase-2Ddovetails_&d=DwMFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=AsrE-c7ZR7B2Kyr3qgfvvppkCEBVsNmwEMndcrRSuOI&m=itqjBjtyH2vgWw81gzwMRVtUEJ0Pf4N4Q4ReGGM5nCEfr1q6N1RA8PPVqg4tpt1X&s=KCkkJ_qk7EAaZEr2xAshFjiktbFEOUv0lyHWNFYfBYk&e=
On Sun, Feb 15, 2026 at 9:33 AM Jon Bondy jon@jonbondy.com wrote:
Adrian:
are the "dovetails" that are generated by BOSL2 straight vertical cuts?
They look so to me.
Jon
On 2/15/2026 9:14 AM, Adrian Mariano via Discuss wrote:
Dovetails would require through cuts at an angle, not perpendicular to
the material surface (for making the pin board). Can laser cutters change
the angle of the laser?
On Sun, Feb 15, 2026 at 8:52 AM William F. Adams via Discuss <
discuss@lists.openscad.org> wrote:
On Sunday, February 15, 2026 at 03:02:15 AM EST, gene heskett via
Discuss discuss@lists.openscad.org wrote:
Finger joints, or even dovetails or butterfly's might be easier to do
in
LinuxCNC with a common text editor. I've done several pieces of green
and green style furniture that way, then converted it to wood on my
milling machines, all run by LinuxCNC from starting to make chips to
finish application.
Finger (or box) joints and butterfly joints work well on a laser since
they are 2D through cuts --- I'm kind of stumped as to how one would do
dovetails since they require variable depth pockets w/ angled sides --- are
there readily available and affordable at a hobbyist/individual user level
which supports the kind of cutting needed for dovetails?
The angle sides, tilting the laser in the x or y plane, hasn't reached
consumer level machines. And likely never until a compact and precise
method of tilting the mount has been developed. The tri-planetary
assembly used for the gear reduction in the extruder of the sovol sv08
MAX could be stacked to give additional, albeit slow but compact tilt
control. The math to drive it would strain the brain but it is doable
with no more power than a pi clone burns.
I tend to do things that most throw 300 watts of wintel horsepower at,
but with pi's, but my backup server here is a banana pi m5 clone, runs
an 11.1T software raid6 made of 5 ea 4T SSD's, plugged into 2 , 7 port
USB3.1 hubs, using StarTech USB3.1 to SATA adapters, 2 hubs needed to
split the current load of an amp a drive when active because one hub
shuts down from overcurrent . Draws 14.5 watts sitting idle, peaks at
19.25 watts while backing up about 90G's of /home/user 1000 scattered
over the rest of my local network, all in under an hours run-time. And I
did it just because I thought I could. Everything but the hubs is on
printed shelves making a 4 drive cage into 8 drive spaces with a 5.1
volt 20 amp supply glued to the top. With a 12 volt 4" fan running on
the 5 volts. I can't hear it running but at 91 my ears aren't that good
anyway. You folks with your math education I hold in considerable awe.
You've made it possible for me to do impossible things in my retirement
years, thank you, a lot.
The Iowa education system threw me under the buss after 8th grade in the
1940's after making a 147 on the Iowa version of the S/B test in the 7th
grade. So I'm a CET on an 8 grade education.
My first job at 14 was as the service tech at a hdwe store in Ft. Dodge
Ia. that was selling the then brand new things we call TV's now. I
drove their '46 Studebaker pickup to do service calls 2 years before I
could get a drivers license. Never got caught. Fun times.
Take care of #1 everybody.
Cheers, Gene Heskett, CET.
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Don't poison our oceans, interdict drugs at the src.
Thanks. I am struggling along with BOSL2's partition() feature.
partition() works well: it is my brain that is challenged trying to
apply appropriate cutouts for all 4 sides of a square().
On 2/14/2026 11:48 PM, John David via Discuss wrote:
I have a beta version of a tabbed-box library I built. There are still
some bugs I am not satisfied with, but I have been using it to design
French Cleat holders and jigs. Let me know if you are interested and
I will share it with you for evaluation. I feel that I am quite a way
from releasing it publicly, but would share it if you are willing to
help polish it up (or at least not accept it as a rough work in progress).
Anyway, some of the specialized functionality allows you to specify
pin lengths, and how to skip particular pins when appropriate (I used
this when designing French Cleat holders where the pins along the edge
of the backplate would interfere with a cleat's support foot).
EBo --
On Sat, Feb 14, 2026 at 10:44 PM Harvey white via Discuss
discuss@lists.openscad.org wrote:
I'd be tempted to design a plate with parametrically modified
sides. A
cube where each of the 4 edges has an optional overlay that does the
notches. You can auto center it and control the width of the
finger. So
a flat cube, difference each side (as needed) with an array of cubes
modified for finger depth and spacing. A little work with a defined
vector (side, spacing, depth) at a minimum would allow you to have
uniform fingers. That as a template would allow laser cut holes
as needed.
I'm doing something of the same concept, but using printed circuit
boards and 3D printed cases. It's all derived from the board layout.
Harvey
On 2/14/2026 10:13 PM, Jon Bondy via Discuss wrote:
Does anyone on this list design plywood structures with finger
joints
using OpenSCAD? Any pointers? I would want to create the 3D
structure in OpenSCAD and then send the 2D cut patterns (DXF?) to a
friend with a laser cutter.
Thanks
Jon
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The partition calls (old or new) in BOSL2 use strictly vertical cuts.
There is also a separate dovetail shape in joiners.scad. That shape can be used to make matching right-angled joiner slots in another part.
-Revar
On Feb 15, 2026, at 7:34 AM, jon jonbondy.com via Discuss <discuss@lists.openscad.org> wrote:
I am talking about code like
partition(spread=12, cutpath="dovetail", size=[1200, 400, 400])
On 2/15/2026 9:52 AM, Adrian Mariano wrote:
The only way I can imagine "dovetails" that used entirely vertical cuts would be if you used them to connect to pieces in the same plane, like the way a jigsaw puzzle goes together. (You could interpret this as a very short non-tapered sliding dovetail, I suppose.) Normal dovetails at a corner have a tailboard, which features flat cuts, and a pinboard, which requires angled cuts. Here's an example from a project I made years ago:
https://adrianmakes.wordpress.com/2012/12/04/file-cabinet-case-dovetails/
On Sun, Feb 15, 2026 at 9:33 AM Jon Bondy <jon@jonbondy.com> wrote:
Adrian:
are the "dovetails" that are generated by BOSL2 straight vertical cuts? They look so to me.
Jon
On 2/15/2026 9:14 AM, Adrian Mariano via Discuss wrote:
Dovetails would require through cuts at an angle, not perpendicular to the material surface (for making the pin board). Can laser cutters change the angle of the laser?
On Sun, Feb 15, 2026 at 8:52 AM William F. Adams via Discuss <discuss@lists.openscad.org> wrote:
On Sunday, February 15, 2026 at 03:02:15 AM EST, gene heskett via Discuss <discuss@lists.openscad.org> wrote:
>Finger joints, or even dovetails or butterfly's might be easier to do in
>LinuxCNC with a common text editor. I've done several pieces of green
>and green style furniture that way, then converted it to wood on my
>milling machines, all run by LinuxCNC from starting to make chips to
>finish application.Finger (or box) joints and butterfly joints work well on a laser since they are 2D through cuts --- I'm kind of stumped as to how one would do dovetails since they require variable depth pockets w/ angled sides --- are there readily available and affordable at a hobbyist/individual user level which supports the kind of cutting needed for dovetails?
William
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