Skiver Vacuum.

[toxo]

46 minutes ago, RidgebackCustoms said:

Here's a cool video for similar piece of equipment/design that shows some application information.  Probably more interesting than useful, but cool video.

I might just have to try it with the air to see if it's better. I've just noticed it's got a treadle activated on off micro switch. I was thinking the air had to be on continuously. 

[toxo]

23 hours ago, toxo said:

I might just have to try it with the air to see if it's better. I've just noticed it's got a treadle activated on off micro switch. I was thinking the air had to be on continuously. 

WELL!  Just plugged the compressor into it and blow me, it works a treat. So thank you @RidgebackCustoms I wouldn't have tried it without your explanation. I'll try to get a video but in the meantime, rather than having a 35ft air hose running through the house, can someone please find me a cheapish quietish compressor?

Well I tried but as you can see I'm no film maker. It's short but you can just see the waste bag shimmering. Also the black air hose on the floor. I can't believe that after all the time I've had it, all I had to do was plug it into the air.

A feeble attempt to show the waste in the bottom of the bag. It's in there I promise.

Edited November 15 by toxo
insert video.

[toxo]

On 11/14/2024 at 2:19 PM, RidgebackCustoms said:

I see a lot of traffic on alternative ideas for vacuum, but thought I'd throw in my two cents on how these units (the original picture) work.

These type of units use high pressure air to generate a small vacuum / low pressure area just ahead of the nozzle.  Material is pulled into the nozzle in the local area and rather than being "sucked" through the hose for the majority of travel, the scrap is pushed by the compressed air along the length of travel.  They're useful when you want to push the scrap a long way or up a vertical section as pushing with compressed air is more efficient than pulling with vacuum.  I would expect to see a set up like this in more of a industrial setting where instead of consolidating the scrap near the machine, several machines are ganged together and their combined scrap is pushed away from the workers.  The unit will only run as long as the compressed air is running through the unit.  Manufacturing facility air typically sits at 80 psi or so.  Higher pressures create higher vacuum areas near the nozzle, but once in the pipeline a lower pressure would be capable of pushing the scrap.

If you wanted to use this set up you would want to mount the vacuum unit (the piece with the compressed air fitting) as close to the scrap as possible as it doesn't tend to "pull" very well compared to other vacuum options.  If not feasible, you would want the scrap to fall through the pipe with little to no bends or turns so that gravity is doing most of the work of getting the scrap near the mouth of the vacuum unit.

If I already was in a shop with compressed air/big reserve tank I would set this up with a simple on/off valve and push the flow to a scrap area farther away.  If I didn't have that already I'd probably go with one of the more conventional vacuum options (shop vac type system).

So, after it being fine with my big noisy compressor I've decided to go with a small dedicated one that'll double with an airbrush. so not knowing much about these things, which one of these should I go for, (or other)?

https://www.amazon.co.uk/gp/product/B0CNQHPZWN/ref=ox_sc_act_title_1?smid=A3A26UX6N932Y5&psc=1

Hyundai Low Noise Electric Air Compressor, 550W Air Compressor, 4CFM, 100PSI Oil Free Air Compressor, 8 Litre Tank Capacity, 2 Year Warranty, Quick Release Fittings UK 13 Amp Plug, White : Amazon.co.uk: DIY & Tools

[toxo]

On 11/16/2024 at 9:28 PM, toxo said:

So, after it being fine with my big noisy compressor I've decided to go with a small dedicated one that'll double with an airbrush. so not knowing much about these things, which one of these should I go for, (or other)?

https://www.amazon.co.uk/gp/product/B0CNQHPZWN/ref=ox_sc_act_title_1?smid=A3A26UX6N932Y5&psc=1

Hyundai Low Noise Electric Air Compressor, 550W Air Compressor, 4CFM, 100PSI Oil Free Air Compressor, 8 Litre Tank Capacity, 2 Year Warranty, Quick Release Fittings UK 13 Amp Plug, White : Amazon.co.uk: DIY & Tools

Update! I decided to go with the Hyundai 8ltr (above). I checked it out first on YouTube and there's a guy there who bought one from B&Q. It turned up with a dented air filter so he decided to return it. Had lots of problems cos was bought with some coupons some of which weren't B&Q. Took awhile to get a replacement and that was damaged also. I should point out that both times the problem was minor and the compressor itself was better than expected.

I decided to run with the odds which is not like me because if I didn't have bad luck I'd have no luck at all. It turned up today and guess what?  The air filter was dented. It wasn't bad at all but I decided to report to Amazon thinking they'd send a replacement air filter but Amazon doesn't work that way. No way to contact the seller and within minutes they were asking me to print out a returns label for the whole thing and giving me a date when someone would be picking it up. I'll probably cancel the return.

Even I was impressed with the noise level and when I connected to the skiver it worked like a charm. Just have to fine tune it to come on when going really slowly. The small spray gun and airbrush are in my future.

 

[toxo]

Update 2. New one arrived old one still here waiting. After some playing I'm having trouble siting the vacuum hose next to the bell knife. The suction seems adequate but some bits are not going down. I'm wondering if there's an optimum shape and position for the intake hose? I'm starting to think about building an all round chute with the suction at the bottom. Thoughts?