Biopowered - vegetable oil and biodiesel forum
Biodiesel => Biodiesel equipment => Topic started by: Julian on December 18, 2014, 09:15:03 PM
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Finished drawing the terminal box for the Leo this afternoon and just started a print going ... it'll take nearly 4 hours to complete!
These are the 2D screen shots. I didn't bother with all the fiddly bits the original had on the top face as they would have required support, so its got a nice flat top.
(http://www.biopowered.co.uk/w/images/0/03/Leo_terminal_box_top.jpg)
(http://www.biopowered.co.uk/w/images/d/db/Leo_terminal_box_bottom.jpg)
Once it's printed I'll stick up some more photos.
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4 hours, 4 HOURS!!!!!!
Git y'self a decent printer matey, me i3 is really rapid prolly do that in 20mins.
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If we are facing in the right direction, all we have to do is keep on walking.
Buddhist proverb
That or Matthew 10:24
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Build an i3 and see for yourself.
Old Suffolk proverb.
Oh yeh, I'm printing on bead blasted glass nowadays.
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I'm very happy with what I've got. I think the belts may need adjustment for the first time since I built it, but it does everything I want it to.
If I've got my sums right, printing in 20 mins what takes me 4 hrs would equate to a print speed of 600 mm/sec!
I considered etched glass when I was building, but blue tape works fine for me.
I think we need some photos of all these new printers, routers and plasma cutters.
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Only took 3½ hrs in the end ... some thing amiss with the printing software me thinks!
(http://www.biopowered.co.uk/w/images/a/a4/Leo_terminal_box.JPG)
(http://www.biopowered.co.uk/w/images/6/6c/Leo_terminal_box_fitted.JPG)
It is considerably thicker all round, 3mm vs 2mm on the original and, as with the TAM 120, the screw pillars are integrated into the sides.
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envious -
i have 4-off those leo pumps. not one of them has an intact terminal cover.
its a shame that its probably uneconimcal for you to sell them, as the originals are so poor that ive never considered it worth replacing them (i think the actual design of the originals is rubbish)
...i realise i still have not replied to your mail on the subject either : (
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Why don't you send the print file to Jim Julian and see how long it takes to print.
And yeah lets have some pics of these printers/routers and the print jobs from them.
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Why don't you send the print file to Jim Julian and see how long it takes to print.
And yeah lets have some pics of these printers/routers and the print jobs from them.
He he ... print wars!
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I think we need some photos of all these new printers, routers and plasma cutters.
A bit rough innit, what layer thickness are you using?
If I put the piccies up you'll all knick me mods and advancements and I ain't started on the plasma cutter yet, got the design done but still looking at linear guide rails and bearings.
In anyway n' anyway don't you just love a windup.
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A bit rough innit, what layer thickness are you using?
Yes, that's why I think I need to adjust the belts. It's done 4 Kg of plastic without any maintenance, which I recon isn't bad.
If I put the piccies up you'll all knick me mods and advancements and I ain't started on the plasma cutter yet, got the design done but still looking at linear guide rails and bearings.
In the true spirit of an open source project ... I'll bet you mumble "Bah, humbug" every time Christmas is mentioned.
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I found that uneven layers was due to the filament rather than belt tension.
I opted to spend a little more on filament and can now print 0.3mm layers with a 0.5mm nozzle upto 70mm/s producing an amazingly smooth vertical surface.
The i3 is a more ridged and prettier machine allowing the greater speeds, well happy with it.
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I ain't started on the plasma cutter yet, got the design done but still looking at linear guide rails and bearings.
you going to use rack and pinion or screws to move it ?
I read racks are better normally, and much better for longer axis (I was to be able to cut a 8x4 sheet)
but... the prices I saw for racks were crazy... was thinking I could have some custom waterjet cut for cheaper!
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I found that uneven layers was due to the filament rather than belt tension.
I opted to spend a little more on filament and can now print 0.3mm layers with a 0.5mm nozzle upto 70mm/s producing an amazingly smooth vertical surface.
The i3 is a more ridged and prettier machine allowing the greater speeds, well happy with it.
That could well be the problem. This filament was quite cheap and from a different supplier to normal.
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I ain't started on the plasma cutter yet, got the design done but still looking at linear guide rails and bearings.
you going to use rack and pinion or screws to move it ?
I read racks are better normally, and much better for longer axis (I was to be able to cut a 8x4 sheet)
but... the prices I saw for racks were crazy... was thinking I could have some custom waterjet cut for cheaper!
There are a few options, cycle chain's, fixed toothed belt, leadscrew and rack & pinion, I've been looking at leadscrews and SBR16 rails.
As for water jet you'll need some very very serious pressures.
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There are a few options, cycle chain's, fixed toothed belt, leadscrew and rack & pinion, I've been looking at leadscrews and SBR16 rails.
As for water jet you'll need some very very serious pressures.
I meant I could get someone else to waterjet some racks for me instead of buying them ;-)
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There are a few options, cycle chain's, fixed toothed belt, leadscrew and rack & pinion, I've been looking at leadscrews and SBR16 rails.
As for water jet you'll need some very very serious pressures.
I meant I could get someone else to waterjet some racks for me instead of buying them ;-)
How would you compensate for wear and backlash with a rack?
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Same as gears ... two racks side by side that can be adjusted longitudinally in respect of each other.
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Same as gears ... two racks side by side that can be adjusted longitudinally in respect of each other.
That could get expensive, you could need as many a 6 racks on a good sized machine, I'll stick with Trapezoidal leadscrews.
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I was thinking the same... I kept reading on a CNC forum an 8foot table needs racks, but screws sound better to me... plus racks mean I'd need the 2 drive motors for that axis on the gantry, when the weight it better on the end of the table ?
I don;t care about cutting speed at all, as long as it's accurate I could leave it to cut one piece all day
I keep talking about building one... but I've been talking about it for 6 months and haven't started yet...
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I was thinking the same... I kept reading on a CNC forum an 8foot table needs racks, but screws sound better to me... plus racks mean I'd need the 2 drive motors for that axis on the gantry, when the weight it better on the end of the table ?
I don;t care about cutting speed at all, as long as it's accurate I could leave it to cut one piece all day
I keep talking about building one... but I've been talking about it for 6 months and haven't started yet...
You can get 2500mm of Tr16 x 8 multi start leadscrew for as little as £82 and NEMA23 steppers are surprisingly cheap as well.
What guide rail and bearings were you thinking of using?
Accuracy is down to how well YOU calibrate the machine before it gets used in anger.
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You can get 2500mm of Tr16 x 8 multi start leadscrew for as little as £82 and NEMA23 steppers are surprisingly cheap as well.
What guide rail and bearings were you thinking of using?
Accuracy is down to how well YOU calibrate the machine before it gets used in anger.
I've got no idea which bearings etc. to buy, I've read up enough so I've got a rough idea in my head of how I'll build it, but I'll leave which bearings/motors etc.. until I'm ready to build it... few other jobs I need to get out of the way first
are you adding hight control ?
I was planning not to, and just set the hight before I start... but googleing other people making them, they seam to think automatic hight control makes a big difference ?
are you going to use the plasma cutter you have already ? you've got a CUT40 iirc ? I've got the same one in a different case ('cobalt40')... haven't used mine on anything big yet so I have no idea if it'll be ok running for longer periods with the cnc table ?
I need to do a load of 3mm stainless, cut to shape and then about 100 of 20mm holes in it...
I've looked at bigger plasma cutters, but they're a bit pricey... I'm thinking I could split the cuts into separate jobs, so it can take a break every 10min instead of getting hot and cutting off?