4 sided machining

[benchmark]

I though I would show some 4 sided machining done with partworks 3D, it worked out really well but a really long machine time.


696


Paul

[beacon14]

Wow, very nice.

How much machine time are we talking about?

[benchmark]

Hi David,

5 Hours.

They are 350mm long 220mm wide and 150mm thick, the 10mm cutter was 100mm long so I could not push it too fast.


Paul

[sailfl]

Paul,

They look like they will be used for a stairway. What is their intended use?

[upsman]

Paul,

Nice Job!!

Tim

[Brady Watson]

Looks great Paul.

-B

[benchmark]

Thanks guys,

They are keystones to the top of some arches, I have also done some small oak ones for some arched windows.

Paul

Paul

[khalid]

Paul
Very Nice Job
However, For such a small part the 5 Hrs is not Optimimum time... IMHO,The same job should not take more than 2Hrs....

Thanks for sharing

[benchmark]

Thanks Khalid,

Have you machined American Poplar with 10mm x 100mm cutter to produce parts with minimal sanding ?

What do you base your machining time on ?

Paul

[mikeacg]

Paul,

They look great! How do you index them on your machine?

Mike

[khalid]

Paul Nice Question...
The answer of the first question is 'No- I didn't machine American Poplar'....

As far as machining time is concerned... I devised few rules to minimize it, and it not required sanding at all (You can see my work)...

I have two different approaches to reduce the machining time
1- Time optimization by Mechanical Means
2- Time optimization by CAM end

You can see my tools, they are not much sharp and mostly DIY, you can also see my MDF machine (I bet, You will never think of working on it )... My spindle router is not powerful as you have (its cheap chinese low cost)Inspite of all this i managed to reduce the machining time onmy woodwork (Lot of ways)...

I don't have a good setup here nor I have American Poplar (I never see it in my life)..But I am confident to reduce the machining time to 02 Hours...


P.S: I see Tool marks on inner side Vertical walls...

[benchmark]

Michael:

I have a box set between the rails on my Shopbot which takes the blocks of wood, the crucial part is the material setting in Partworks3D are the same size as the block, also make sure the the 3D model is centered in the block. You just need to zero the cutter to the 0,0 of the block of wood, then rotate each face with Z zero to the block.


Khalid:

Poplar is extremely hard and brittle, when machined to fast will splinter very easily. The 10mm x 100mm ballnose cutter cannot be pushed to fast before it starts to vibrate, causing tool marks in the wood. I am using a 0.5mm step over, what stepover would you use for a 2 hour machine time ?



Quote:
I have two different approaches to reduce the machining time
1- Time optimization by Mechanical Means
2- Time optimization by CAM end

Please explain.

I see that your machine looks fairly light in weight which helps reduce momentum when stopping abruptly, having a heavy gantry banging about does not produce a good finish. The Z movements at some parts 80mm virtical which does not give a smooth fast cutting flow.

The tool marks on the virtical walls are from the 12mm dia rough cut...However these end blocks are waste and cut away after 3D machining.

At the time I made these Aspire was not available, had I been able to use Aspire I could have isolated specific areas for machining, so reducing machine time.

Paul

[bcammack]

I'm thinking he means that he'd either bandsaw the basic shape to save time on the ShopBot doing stock removal and allow it to do what it does best, the final shaping and detail cutting, or he would use two programs, one with a fairly coarse, aggressive bit to quickly remove excess stock and the change to the final tool and run the 2nd program to finish it up to the level of quality your images display.

Of course, I'm no mind reader...

[cabnet636]

nice piece of work, i know very well if i could shave time then with the 3d aspect it would not be much and i have a multi head machine that ain't no slowpoke!

excellent work!

jim

[mikeacg]

Paul,

Thanks for sharing. I definitely want to try doing some of that type of stuff.

Mike

[sidofengland]

Hi Paul
Nice work.
Paul, where are you in England? I need to speak to people a little more locally (Phone calls are cheaper to UK than elsewhere)so no disrespect to everyone else out there - I'm a learner and I'm always totally amazed by what you can all produce.
So Paul if you can let me have some contact details I would love to have a chat
Regards Sid

[benchmark]

Hi Sid,

It's a pleasure I have sent you a PM, I am just on the outskirts of London. You can phone places around the world very cheaply using "Telediscount", it is only 1p amin to the USA


Regards

Paul