I had a thread a while ago about the noise my dust extractor creates when both motors are switched on.
There were a few posibilities suggested such as an air leak and Camvac themselves also suggested this.
Link to original post:
dust-extractor-odd-noises-t52703.html?hilit=%20bandsaw
It's a kind of wailing noise that increases when I'm using the machine and dies away when I switch off a motor.
I think I've worked out what it is but I'm not sure how to resolve it.
Essentially I think I'm producing too good a seal and essentially there's not enough air flow into the pipes. It's kind of what would happen if you put the dust pipe against a flat surface and left it sucking.
The other problem is I have a 4" Camvac unit but all my machines are small so I've had to use a length of 2.5" pipe to connect to the machines and my bandsaw and to keep weight down the 2.5" pipe is about 2m long so I'm already reducing airflow.
I have the bandsaw extraction directly under the table as per Olly's design so the connector is right under the table and the blade runs through the drainpipe elbow so the seal is pretty good. Excellent for extraction but not so good for the airflow it seems.
Post on the extraction with photos:
bandsaw-dust-extraction-my-solution-t52252.html?hilit=%20bandsaw
I have holes in the plate in my bandsaw but the original was damaged and I had to make a new one so the holes arn't the best. They didn't frill very cleanly.
It's worse though when material passes over the plate.
I can stop the wailing by leaving a gap where the pipe connects to the bandsaw but then I don't get very efficient extraction and when I'm cutting plastic this gets pretty messy.
I'm thinking I could maybe make a couple of holes in the drainpipe elbow to let air in but I don't want to compromise my design before getting some opinions.
Any thoughts?
Thanks,
Jennifer,
There were a few posibilities suggested such as an air leak and Camvac themselves also suggested this.
Link to original post:
dust-extractor-odd-noises-t52703.html?hilit=%20bandsaw
It's a kind of wailing noise that increases when I'm using the machine and dies away when I switch off a motor.
I think I've worked out what it is but I'm not sure how to resolve it.
Essentially I think I'm producing too good a seal and essentially there's not enough air flow into the pipes. It's kind of what would happen if you put the dust pipe against a flat surface and left it sucking.
The other problem is I have a 4" Camvac unit but all my machines are small so I've had to use a length of 2.5" pipe to connect to the machines and my bandsaw and to keep weight down the 2.5" pipe is about 2m long so I'm already reducing airflow.
I have the bandsaw extraction directly under the table as per Olly's design so the connector is right under the table and the blade runs through the drainpipe elbow so the seal is pretty good. Excellent for extraction but not so good for the airflow it seems.
Post on the extraction with photos:
bandsaw-dust-extraction-my-solution-t52252.html?hilit=%20bandsaw
I have holes in the plate in my bandsaw but the original was damaged and I had to make a new one so the holes arn't the best. They didn't frill very cleanly.
It's worse though when material passes over the plate.
I can stop the wailing by leaving a gap where the pipe connects to the bandsaw but then I don't get very efficient extraction and when I'm cutting plastic this gets pretty messy.
I'm thinking I could maybe make a couple of holes in the drainpipe elbow to let air in but I don't want to compromise my design before getting some opinions.
Any thoughts?
Thanks,
Jennifer,