Openbuilds workbee cnc spindle mount 43 Kress 1050 FME attachment interface for common dust shoe

Intended for openbuilds workbee cnc and similar 43mm spindle mounts as

an attachment interface for typical openbuilds based dust shoe accessory.

Note:

If you want to customize the part, read point "N.B.3" below.

Purpose:

The 43mm spindle mount plate version of Openbuilds Workbee is

typically used with more powerful router models as for example

the KRESS 1050 FME, aka AMS, MAFELL, etc.

Unfortunately unlike other typical router models with different

mounting cylinder diameters and lengths this router model

when mounted the 43mm cylinder of that router will barely

protrude underneath the spindle mount plate a few mm.

This thus offers no realistic possibility to clamp/attach a typical

openbuilds concept based dust shoe commonly available on most

stl library sites such as most of us's worst favorite platform

like Thingiverse.

The common available alternative is a completely

differently designed mount concept all together but imho this compromises

the stability, strength and precision of the standard mounting system

and brings further downsides such as inhibiting the options for

absolutely mandatory and required spindle tramming process etc.

So I've set out to come up with a different concept all together.

Create an attachment as transition between the unaltered stock

openbuilds 43 mm spindle mounting plate that will allow for

plug-and-play-ish interface with the typical openbuilds concept

based dust shoe used with all other typical 52, 65, 70 and 80mm

cylinder diameter router spindles which protruding cylinder provides

enough length for fixing a dust shoe.

I also included clearance for both lower angle corner connectors.

As is, the very lower part of the whole attachment which is a (~52

outer diameter cylinder) will still allow to access the KRESS's

locking nut with a wrench to swap router bits easily.

The published STL has been generated Openscad code I wrote and

which I will include in the thingiverse post.

So if need be you can just download and install free Openscad

and modify the part yourself in case you need to perform any

tweaking.

There are 3 files for the code, one is the main code and the

two other files are the codes for the 2 subparts which the main

part is composed of.

When opening the main code in Openscad you just need to make sure

the two dependency files are in the same location as the main code

as follows:

N.B.:

main code file:

"workbee_cnc_spindle_mount_43_attachment_for_dust_shoe.scad"

dependency code files:

files "wcsm43afds_subpart1.scad" and "wcsm43afds_subpart1.scad"

dependency code for subparts must be placed in same location

N.B.2:

You might want to read through the subpart code comments

first for more useful information should you want and/or need

to tweak this code and/or the resulting generated final object.

A lot can already be tweaked just by modifying some variable

values either in the main or in the subpart codes.

N.B.3:

Quick and overall basics and hints to get you started with

Openscad and tweaking this code.

Download and install free Openscad.

Open this main code file

"workbee_cnc_spindle_mount_43_attachment_for_dust_shoe.scad".

Now Openscad might not display the object properly in the first

place (showing only parts of the code based transformations),

just hit F6 to run compile and that will make things look like

they should.

To export the final generated object as 3d printable STL

go to File -> Export -> Export as STL...

Do not use the thingiverse customize function, it just takes a random one of the 3 code files and does whatever monkey business with it. Just download the 3 scad files locally into the same location, open the main file in Openscad and it will work.

N.B.4:

I 3d printed the object in standard PLA with a 50% infill at

205°C on an Ender 3 V2 using standard ZigZag support material.

I recommend using flat head M5x12 with a standard precision

shim/washer and no need to over tighten the 4 screws.

It will be plenty strong and it won't move.

N.B.5:

This is an example as suggestion, but there are many of this

type of dust shoes STL on Thingiverse that will plug and play

provided you either pick one with a 52-52.5 ish diameter input

or you modify this code in order to fit the diameter required

by the dust shoe STL file you so choose.

As an example (and the very one I used) once done you can go on

and download and print this magnetic two part dust shoe (by gbiski) :

https://www.thingiverse.com/thing:2780529

(Superglue in the 10mm magnets in the right orientation on the upper

and lower parts and test the two parts magnet snap together !first!)

It will pretty much (maybe a light sand depending on the accuracy

of your 3d printer) plug and play pretty tight already into this

attachment from below.

I dry test fitted the upper part of the magnetic dust shoe first,

then I went on and 'superglue-is-your-friend' it to the attachment

generated by this code.

Then finally you take the lower part of the magnetic dust shoe and

cut to size and hot glue your typical 70/100mm dust cover !around!

it.

Example of the one I used below:

https://www.amazon.de/dp/B097ZVPRQ8?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

Additional tip: the dust cover I used has 3 stitching lines, I hot

glued it to the lower part so that only the lower stitching protrudes

underneath the lower part. This makes it so that when magnet

snapping the lower part to the upper part, the upper part of the

dust cover's textile wraps around the upper part of the magnetic

dust shoe without touching the lower part of the attachment above.

This allows you to spare the extra unnecessary height underneath

and increases the chance of using router bits with smaller lengths.

Also towards the same goal I went on and cut 1.5cm off the length

of the dust cover's brushes. I wouldn't advise to cut off more

than you really have to.

For jobs using a router bit that is short, just remove the lower

part of the dust shoe all together and you can still put it the dust

collector and for that small amount of dust that router bit will

generate it will still pick up most of it.

N.B.6:

Now for the dust collector side of the dust shoe...

I have created another STL (and made available the Openscad code)

for a 46.5mm to 37mm vacuum hose adapter with flange and mounting holes which

will plug-and-play fit into the 48mm hole of the magnetic dust shoe

mentioned above.

That vacuum hose adapter can also be attached to the upper part of the two part magnetic

dust shoe accessory mentioned above, your choice.

The adapter is available on Thingiverse on the following URL:

https://www.thingiverse.com/thing:7234109

I hope this will help people with the same problem I had.

If so please make sure to let me know in the comments, always good to hear.