Good evening,
I've been using my CNC recently to engrave business card holders for my online store. I've added a couple of images, showing how I've managed with the first 60 or so engravings, and to be honest I've had enough and need a better method. (I couldn't attach the images by the way, every time I tried the screen went blank and wouldn't load the images in).
I currently clamp down the front plywood block, insert the business card holder, then clamp the second plywood block to the business card holder at the back. This creates a secure system as it doesn't move at all, but it does require a little bit of setup to make sure everything is square.
Any suggestions would be great, of course I'm able to build something, and willing to put the time into it so I've got a system that enables quick setup without the need to constantly check for square.
Many thanks,
Rhys
CLAMPING SYSTEM IMAGE ONE
CLAMPING SYSTEM IMAGE TWO
Clamping suggestions
- rgerding
- Vectric Craftsman
- Posts: 128
- Joined: Mon Nov 28, 2016 7:29 pm
- Model of CNC Machine: Iconic 2015
- Location: Ottawa,OH
Re: Clamping suggestions
I had a problem also posting pictures. You can go on line and there are many sites that will resize your picture to a smaller acceptable size. I can’t remember the size required but that’s probably why they wouldn’t upload. It would be beneficial to see the pictures so that we can understand the situation.
Ron
If sawdust were gold, I'd be very rich
If sawdust were gold, I'd be very rich
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- Vectric Wizard
- Posts: 1717
- Joined: Sun Sep 23, 2012 12:14 pm
- Model of CNC Machine: CNC Shark Pro, Probotix Meteor 25" x 50"
Re: Clamping suggestions
For holding small parts I designed a thin profile bed vise that can be held in place by t-track bolts, bolts into a threaded insert grid, or just about any other hold down strategy.
You can find a downloadable file for it by searching this forum for "vise".
http://forum.vectric.com/viewtopic.php? ... se#p189439.
4D
You can find a downloadable file for it by searching this forum for "vise".
http://forum.vectric.com/viewtopic.php? ... se#p189439.
4D
- martin54
- Vectric Archimage
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- Model of CNC Machine: Gerber 48, Triac PC, Isel fixed gantry
- Location: Kirkcaldy, Scotland
Re: Clamping suggestions
What control software are you using to drive your CNC machine ?
When I have repeat jobs to do I generally make some kind of jig that can be positioned on the spoilboard with dowels the same way that they are used for 2 sided machining, I have the x, y offsets saved so whenever the jig is placed on the spoilboard & can quickly set up my X & Y zero positions, the Z axis is set to the top of the gantry in the saved work offset file so it doesn't matter what thickness material I am using, easy enough to just zero the Z axis to the top of the material I am cutting.
There is a simple rectangular jig in this video by Andrew Pitts that uses a wedge to lock the stock material in place, you could easily make a jig like this to do multiple bus card holders at a time
When I have repeat jobs to do I generally make some kind of jig that can be positioned on the spoilboard with dowels the same way that they are used for 2 sided machining, I have the x, y offsets saved so whenever the jig is placed on the spoilboard & can quickly set up my X & Y zero positions, the Z axis is set to the top of the gantry in the saved work offset file so it doesn't matter what thickness material I am using, easy enough to just zero the Z axis to the top of the material I am cutting.
There is a simple rectangular jig in this video by Andrew Pitts that uses a wedge to lock the stock material in place, you could easily make a jig like this to do multiple bus card holders at a time
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- Vectric Wizard
- Posts: 447
- Joined: Thu Oct 02, 2014 1:49 pm
- Model of CNC Machine: FMT Patriot 4 x8
Re: Clamping suggestions
You can always use your cnc to ensure accuracy of workpiece placement by roughly positioning your fixtures then squaring up with a pass by the cnc.
- highpockets
- Vectric Wizard
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- Joined: Tue Jan 06, 2015 4:04 pm
- Model of CNC Machine: PDJ Pilot Pro
Re: Clamping suggestions
I've used jigs for a lot of projects where I have repeat work. I've installed threaded inserts in my spoil board and have XY machine coordinates marked on each jig so I can easily setup for different runs. I use to use edge clamping on the material in the jig, but when doing a lot of cutting sometimes the material would popup just a little causing some uneven cuts and in some cases ruin the run completely. I've now switched over to vacuum jig and haven't looked back! Much faster to install and release the material and I haven't had any issues with material lifting.
John
Maker of Chips
Maker of Chips
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- Vectric Craftsman
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- Model of CNC Machine: Shark
Re: Clamping suggestions
On my spoil board I have attached 2 pieces of 1/2 plywood forming a 90* angle at the X Y 00. This ensures squareness. When doing multiple runs, I use two clamps attached to the spoil board. I'll take a photo of them tomorrow and post.
Barry
Barry
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- Vectric Apprentice
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Re: Clamping suggestions
I resently changed my clamping system as the old one just was not working for me. I used 1/2 MDF as the base system and purchased several 48" t-slot system. I cut with a 1/2 router bit slots for the t-slots
to fit in. I placed 4 of them about 6 inches apart. Only about 24 inches deep on the length of the Y axis. Then I cut some 1/4 pieces of MDF to use as the spoiler board. This now allows me to have lots of flexiblity in my different
sizes and clamp them down. So far it works much better and gives me that flexabilty on the work area, plus holds them down very well.
to fit in. I placed 4 of them about 6 inches apart. Only about 24 inches deep on the length of the Y axis. Then I cut some 1/4 pieces of MDF to use as the spoiler board. This now allows me to have lots of flexiblity in my different
sizes and clamp them down. So far it works much better and gives me that flexabilty on the work area, plus holds them down very well.