Bandsaw Attachment Pulls Over 92% Of The Dust

[@jonsworkshop]

Hi Jon, excellent improvement. Probably one of the most thorough tests of an improvement I have seen for a long time, I would certainly not call it amateur! Well done. 👍🏴󠁧󠁢󠁳󠁣󠁴󠁿

[@thehobbymachinistnz]

Thanks for your comments Jon. This design works really well. I should have added it long ago.

[@JHowell-kt5gx]

Nice one, I’m going to copy this for my old bandsaw. 👍🏼

[@thehobbymachinistnz]

It works well, and sure save a lot of cleaning up.

[@MattysWorkshop]

Gday John, that was definitely worth doing and with excellent results, less mess to clean up equals more time doing fun stuff mate, cheers

[@thehobbymachinistnz]

Thanks Matty. I was quite surprised how well it worked.

[@PiefacePete46]

Another nicely paced, thorough, and useful video, thanks. I made an experimental vac attachment cobbled up from ply offcuts, pvc pipe, and hot glue. It's held on with magnets. It worked even better than I had hoped, so I spent forever with Fusion 360 etc. and made a number of 3D printed versions, until I had something that was very satisfying... DAMNED THING HAS NEVER WORKED AS WELL!.. It looks pretty though. 😜

[@thehobbymachinistnz]

Thank you for your comments. Yes, it is amazing how much dust can be collected when your vacuum is targeted directly under the table where the blade is pulling most of the dust.

[@125spectrum]

Really enjoy your varied content. Paul, Scotland

[@thehobbymachinistnz]

No problem. Thanks for watching.

[@Hiksan5]

Good video. Made a similar device some while ago. A lesson I learned: If you open up the attachment more behind the blade, it will allow larger airflow past the blade and even more dust collected. (Also your dust collector will get cooled more and last longer)

[@thehobbymachinistnz]

Thanks for the tips. The air flow is the key and I was thinking about how much I should open it up. In the end I opened the blade gap to around 10mm wide. I tested it by blocking the hole where the blade comes down so that all the air is sucked through the gap. I listened for changes to the dust collector. If it sounded like it was semi blocked, I would open the gap wider. How wide is the gap on your one?

[@Hiksan5]

​@@thehobbymachinistnz You are welcome. Mine has about the same gap as yours, i placed it as far up against the table as possible top get ad downward airflow (in hope of getting sawdust away from below the teeth of the sawblade)

[@howder1951]

Great solution and veery nice results. It looks like it could be made of PVC fairly easily as well. Perfect accompaniment for my cyclone unit, Enjoyed, cheers!

[@thehobbymachinistnz]

Thanks for your comments. Most of these that I saw on YT were made of plastic. A lot were upside-down and modified floor tools from shop vacs. These floor tools or PVC will be absolutely fine to use, I just did not have any of these materials available.

[@mickgentry8128]

Great result Jon! might have to do similar on mine. It has a dust extractor port in the lower wheel cabinet but it is pretty useless. Cheers

[@thehobbymachinistnz]

Yes, I saw a few videos on YT where people were complaining that the extractor port does not work very well. The home made ones like this design seem to work the best. You are actually taking most of the dust away before it has a chance to get into the machine. Thanks for watching.

[@MyMiniHomeWorkshop]

Nice result 👍

[@thehobbymachinistnz]

Thanks for watching.

[@jimurrata6785]

Im going to make a suggestion Take an old toothbrush and heat the handle. Bend it so you can attach it inside the lower cover as a "sweep" for the lower tire (tyre? for you antipodes🙃) so the dust/swarf doesn't keep stuck and run round under the blade again and again.

[@thehobbymachinistnz]

Yes, I have seen similar wiper/cleaner designs on bandsaws from the factory. Thanks for watching.

[@muthatrucker6485]

That "dust" that's sticking to your wheel and blade has resin and oil from the wood (pine especially) . it essentially sticky tar once heated and compressed

[@thehobbymachinistnz]

Thanks for the info.

[@PiefacePete46]

It can be a contributor to blade vibration once it's caked on. I saw a device made using a couple of 50mm (2 inch) rotary brushes (One for each bandsaw wheel). They had skate bearings fitted, and were mounted to the fixed part of the blade covers so they ran against the bandsaw wheels. The bristles were brass, but I think that was only because they were old ones that he already had. They were not powered; they simple ran against the wheels and flicked the dust off... he reckoned they were worth the effort.

[@SergeiPetrov]

I’m very curious what happens if you additionally connect the exhaust of the dust extractor to pump air into the saw box? In theory, sawdust should be blown out of the saw blade at the entrance to the box. "But it is not exactly" :)

[@thehobbymachinistnz]

Do you mean add compressed air to where the air is sucked in right behind the blade?

[@SergeiPetrov]

@@thehobbymachinistnz Yes - an additional chamber through which the saw blade passes with increased air pressure. Also following the example of saws for metal, a brush is added that rotates at an angle to the blade, which cleans the teeth of the saw.

[@trollforge]

Awesome results! Too bad you have to remove it to change the blade... I'm also guessing that it impedes the use of the table tilt?

[@thehobbymachinistnz]

Thank you. Yes, it will need to be removed when replacing the blade or tilting the table. Fortunately I only use the band saw for cutting out bowl blanks and other uses for preparing wood for woodturning. I only use 1 blade, and I have never needed to tilt the table. Thanks for watching.

[@trollforge]

@@thehobbymachinistnz Ya, I only tilt mine once or twice a year, but I seem to change blades every other time I use the saw... Tip: don't buy a lot of 20 different blades for your saw at a buck a piece, the time spent keeping the best possible blade for the job isn't worth the savings... ;)