Laser / CNC Entry Level CNC Machine Advice needed.

The Rocketry Forum

Help Support The Rocketry Forum:

ghostfather

Well-Known Member
TRF Supporter
Joined
Mar 28, 2018
Messages
196
Reaction score
155
Very nice enclosure. Been considering making something myself, but just to place over the Shapeoko (mostly for noise and dust), which shares a table with my drill press and sander.
I especially like the built-in lighting. I have a wheeled shopvac with cyclone dust collector, so I would just need to connect it to the hose on top.
 

BryRocket

Well-Known Member
Joined
Jun 19, 2017
Messages
505
Reaction score
139
Very nice enclosure. Been considering making something myself, but just to place over the Shapeoko (mostly for noise and dust), which shares a table with my drill press and sander.
I especially like the built-in lighting. I have a wheeled shopvac with cyclone dust collector, so I would just need to connect it to the hose on top.
It does make the noise and dust much more manageable. I’m thinking of enclosing the bottom as well because now the shopvac is the loudest culprit.
The lighting was easy and cheap. I also made the top part of the enclosure separate from the bottom so if needed, I can lift off the top for access to the back of the machine. Seems to work so far.
 

ghostfather

Well-Known Member
TRF Supporter
Joined
Mar 28, 2018
Messages
196
Reaction score
155
My shop-vac on wheels is a closed cabinet because of the noise. It exhausts through the floor of the cabinet through two layers of baffles to cut down the noise, and I use sound-absorbing foam in the cabinet where the shop-vac lives as well.
Using the CNC for a job taking several hours, I've at least cut down the shop-vac noise, now I need to use something similar for the Shapeoko CNC.

Got the idea online from this sort of video:
 

FMarvinS

Well-Known Member
Joined
May 27, 2015
Messages
472
Reaction score
96
Hi,

Your fins look very good. I'm very interested in learning how you plan to bevel the fins symmetrically on both sides. Are you doing a 15 or smaller degree bevel and what router bits are you using. Also, what technique are you using to symmetrically place the "flipped" fin in position to produce a symmetrical and corresponding bevel. Currently, I cut on an X-carve and bevel using a router table, I'd love to be able to do all on the CNC only.

Thanks,
Fred
 

BryRocket

Well-Known Member
Joined
Jun 19, 2017
Messages
505
Reaction score
139
Hi,

Your fins look very good. I'm very interested in learning how you plan to bevel the fins symmetrically on both sides. Are you doing a 15 or smaller degree bevel and what router bits are you using. Also, what technique are you using to symmetrically place the "flipped" fin in position to produce a symmetrical and corresponding bevel. Currently, I cut on an X-carve and bevel using a router table, I'd love to be able to do all on the CNC only.

Thanks,
Fred
So I just sacrificed a few G10 fins trying to bevel with a router table. They just look horrible. If I can’t figure out this CNC beveling I’ll have to go back to the drawing board on that.

I’d like to first point out I haven’t done this yet. I plan to give it a go in the next week or so.

My plan is to:
Clamp down tightly a 14” x 12” piece of 0.50” MDF. Then zero XYZ in the front left corner with a 1/4” flat endmill. Surface that board down 1.5mm or so to try and square it all with the machine.

Then switch to a 1/8” flat endmill, rezero XYZ in the lower corner, run a gcode that pockets out the fin perimeter at a depth 1/2 the fin thickness for each side of the fins.
D702BACE-DC4B-471A-B01A-3D689DDD94BF.jpeg
AD79BC09-D8F3-454A-9950-2ABDB0FEBD6D.jpeg
Place the fins into the pockets(I’m currently working on a hole down solution that doesn’t involve tape so I can maintain the accuracy of the pocket-fin interface) Switch to a 1/8” ball endmill, zero Z ONLY on the fin and run a contour gcode to do the beveling. Then I can switch the two fins and run it again.
95DA6DA4-6379-4A64-B7D9-E85861CB0F6B.jpeg

I have actually made two separate gcodes now, one for each fin, so that I can just do one if I want and rezero Z on that fin.

I will report back my experiences and result. Thanks again to @KC3KNM for pointing me in this direction.
 

dhbarr

Amateur Professional
Joined
Jan 30, 2016
Messages
7,227
Reaction score
1,649
What did the fence on your router look like?
 

BryRocket

Well-Known Member
Joined
Jun 19, 2017
Messages
505
Reaction score
139
What did the fence on your router look like?
I'll take a picture later and post it. I had to 3D print my own because the fence that came with the router didn't look perfectly straight or all that robust.
 

FMarvinS

Well-Known Member
Joined
May 27, 2015
Messages
472
Reaction score
96
Thanks for the reply, I look forward to your update.

Fred
 

BryRocket

Well-Known Member
Joined
Jun 19, 2017
Messages
505
Reaction score
139
Thanks for the reply, I look forward to your update.

Fred
Well I was able to pull it off. I'm not going to say its the best way to bevel fins, but they turned out as good as I could have hoped for. They seem perfect to my eyes and calipers. I am happy to detail how I did it. Maybe I should create a seperate thread for that (Scratch Built vs this forum?)?
IMG_1497.jpeg
IMG_1498.jpeg
IMG_1502.jpeg
 

FMarvinS

Well-Known Member
Joined
May 27, 2015
Messages
472
Reaction score
96
They look very good! I'd enjoy seeing the details here on the forum.

Thanks,
Fred
 

BryRocket

Well-Known Member
Joined
Jun 19, 2017
Messages
505
Reaction score
139
They look very good! I'd enjoy seeing the details here on the forum.

Thanks,
Fred
 

Latest posts

Top