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Thread: My new Vacuum Chucks
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19th January 2012, 04:34 PM #16GOLD MEMBER
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Neil
A good post
I have been using a vacuum chuck with a vacuum cleaner for some time now but having read this I may have to look into using a vacuum pump . My current setup definitly will not work when there is only a small contact area Also the howl of the vacuum cleaner is a bit trying.
One area I have found where caution is necessary is when using it to hold a natural edge burl bowl . These bowls can still be quite a bit out of balance when finished and I have had one launch itself off the vacuum chuck . Maybe the increased vacuum of a vacuum pump would solve this.
Ted
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19th January 2012 04:34 PM # ADSGoogle Adsense Advertisement
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19th January 2012, 09:49 PM #17
What extra load on the bearings? The vacuum pulls the piece onto the chuck, so same load as any other chuck isn't it?
The electric one is a 4.2 cfm one and pulls almost full vacuum (I am sea level +50m max), great for stabilizing, but I will need to be careful on dainty stuff. I have a valve on the line to reduce vacuum if needed. It plugs straight into a std powerpoint.
The air one pulls slightly less vacuum, not much, but also takes 2mins to get there at its working pressure of 80psi air pressure.
Yes, a vacuum cleaner does work, but not for a 50mm head. This is what I need for the trinket boxes and the natural edge form I am making. Sticks well with the electric vacuum, but I still need to be very careful, still not much force holding it there. I will still use the tailstock as long as possible. Balance was not a problem, but bigger ones might pose a problem of out of balance.
Thanks for the commentsNeil____________________________________________Every day presents an opportunity to learn something new
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10th March 2012, 04:39 PM #18GOLD MEMBER
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Neil
Are you using any type of filter in the vacuum line to prevent dust contamination of the oil in your pump ?One reference I found suggests this is an issue.
Also what type of shop sells all those brass(?) fittings you used to connect everything together?
Thanks
Ted
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10th March 2012, 06:22 PM #19
Hmm, hadn't thought of the dust, but shouldn't be much as I will be gripping only finished pieces to remove tennon etc.
I get the fittings from a hydraulic hose and fittings supplier, like Enzed, check your yellow pages should be one near you.
CheersNeil____________________________________________Every day presents an opportunity to learn something new
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11th March 2012, 11:34 AM #20GOLD MEMBER
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Thanks Neil
Ted
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13th March 2012, 10:44 PM #21Senior Member
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You might get some dust sucked in through the bleeder valve if you use the vacuum chuck while sanding.
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13th March 2012, 11:15 PM #22
Bleeder valve will be shut though whilst gripping the piece, but yes I will need to ensure no dust around as I release it.
Neil____________________________________________Every day presents an opportunity to learn something new
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17th March 2012, 12:55 PM #23GOLD MEMBER
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nice a new project when i get time!!!
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17th March 2012, 04:04 PM #24GOLD MEMBER
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Neil
I have noticed that after sanding the foot of burl bowls in particular, using my vacuum cleaner system,that I often have dust on the inside of the bowl at the finish . It is obviously getting through the fine cracks . I have seen a reference to making a filter to protect the pump from a length of PVC pipe with endcaps fitted and filled with aquarium filter material . Connectors are tapped into either end.
Ted
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17th March 2012, 09:54 PM #25
I guess I can set up some aircon filter stuff I have in the line easy enough.
Neil____________________________________________Every day presents an opportunity to learn something new
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18th March 2012, 03:19 PM #26
Maybe a inline air filter like I've used?!?!? Got it off eBay for bugger all. Only had to glue the tyre-valve into an open position to get it working - can't actually see the dust build up the way I've installed it but it's nice to know the pump is protected . . . and I will take it off and clean it out . . . one day . . . . or maybe just turn it around
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18th March 2012, 04:31 PM #27GOLD MEMBER
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The little air filter like TTIT has looks like the go . I thought about this but wondered if it would collapse under vavuum. Obviously not. E-bay has them for less than $13.
Ted
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3rd April 2012, 08:15 AM #28Member
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Keen to get a vacuum pump. Checked out eBay but over $300. Can anyone recommend alternatives. Is there one for sale anywhere.
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3rd April 2012, 09:05 AM #29
keltrader - Just had a look on ebay, seems to be lot's from $100 up. Take a look at this link.
refrigeration vacuum pump | eBay
FredoA computer once beat me at chess, but it was no match for me at kickboxing
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5th April 2012, 11:22 AM #30Member
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Thanks Fredo. Could be the go.
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