Wood Clamps. My Design.

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Re: Wood Clamps. My Design.

Postby SteveM » Sun Nov 20, 2016 10:15 pm

May sound like a dumb question, but the surface tool path would eliminate the pocket path you cut to allow the hold down bolt to go thru, unless you are flipping the board over and running that tool path to make the stock thinner.
If I am not understanding it correctly, please advise me.
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Re: Wood Clamps. My Design.

Postby 4DThinker » Tue Nov 22, 2016 9:10 am

SteveM wrote:May sound like a dumb question, but the surface tool path would eliminate the pocket path you cut to allow the hold down bolt to go thru, unless you are flipping the board over and running that tool path to make the stock thinner.
If I am not understanding it correctly, please advise me.
It has been awhile since I started this thread. As I remember the clamps are cut in two halves, I started with a 3/4" thick board, but surfaced the area I was going to cut clamp halves out of down 1/8" to a final 5/8" thickness. This will leave me with clamps that are 1.25" wide.

Then I cut pockets for the bolt slot at 1/8" starting depth and 5/32" cut depth. Then I cut around the perimeter of both halves.

4D
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Re: Wood Clamps. My Design.

Postby SteveM » Tue Nov 22, 2016 10:29 pm

so the surface tool path is cut before the pocket tool path.
I watched the milling process a few times ant figured that is what must be done.

Thanks for the help
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Re: Wood Clamps. My Design.

Postby bill z » Tue Nov 29, 2016 10:28 am

I'm guessing that everyone has a preference about what clamp works better for them and what they are doing.

The more I work with small projects, the more my clamps with the knobs get in the way of the vacuum mount. A 4 inch vacuum really hangs out there.

Recently, I have been having much fewer accidents using home made low profile clamps with nylon bolts. I have to have an assortment of lengths but really not that many different lengths.

These clamps are not my idea but I really like them. They hold down and keep the project from sliding at the same time.

I have a different design with steps on the back side to adjust the angle a little more. I made this from ply but others from white maple scraps. I have used these with my predrilled top and T nuts with just the extruded aluminum.

I have also included my dxf of my 8 inch clamp if anyone is interested. I use this and the nesting option in Aspire to make several in one cutting.
Attachments
CNC Clamp.jpg
DIY Clamp
WoodClamps8InchLong.dxf
DXF File
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Re: Wood Clamps. My Design.

Postby dvaskie127 » Fri Dec 15, 2017 3:38 pm

4DThinker wrote:
SteveM wrote:May sound like a dumb question, but the surface tool path would eliminate the pocket path you cut to allow the hold down bolt to go thru, unless you are flipping the board over and running that tool path to make the stock thinner.
If I am not understanding it correctly, please advise me.
It has been awhile since I started this thread. As I remember the clamps are cut in two halves, I started with a 3/4" thick board, but surfaced the area I was going to cut clamp halves out of down 1/8" to a final 5/8" thickness. This will leave me with clamps that are 1.25" wide.

Then I cut pockets for the bolt slot at 1/8" starting depth and 5/32" cut depth. Then I cut around the perimeter of both halves.

4D


The file left out the start depth and just gave the cut depth. I think this is what was meant to happen.
Attachments
FlatClamps.crv
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Re: Wood Clamps. My Design.

Postby 4DThinker » Thu Dec 28, 2017 10:31 am

I've revised my design, and since I now have a bed clamp that lets me grip small parts easily I cut the side profile as one piece out of 1.25" thick hardwood. I then mount the clamp flat in my vise and cut the slot for the bolt.
Short and long versions in this file. Separate file for the slots. First set I made out of 1.25" thick northern Ash.

4D
Attachments
4 Clamps thick ash.crv3d
(1.1 MiB) Downloaded 14 times
Clamp Slot.crv3d
(37 KiB) Downloaded 13 times
Short clamp slot.crv3d
(39 KiB) Downloaded 13 times
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