Dust Deputy & CT Vac

[BarnyardTim]

Ok, I need some of you smart guys to help me out again.  I finally rid myself of my old Shopsmith DC and got a dust deputy with a 55-gallon plastic drum, driven by my CT36.  Setup was working great until I hooked it up to my Dewalt DW735 planer.  Problem is that the blower on the planer is blowing air into the drum faster that the CT can take it out causing the lid to lift up and then dust blows.  I think the problem may be that I am running the 27mm hose from the CT to DD and a 2.5" hose from the planer to the DD.  I put a smaller 1.5" hose from the planer to DD and it stopped the lid from lifting, but caused the planer to spit a lot of chips out the front and built up on the table.  Do you think increasing the hose diameter between the CT and the DD would help??  I would rather not have to restrict the blower as it does a really great job of clearing chips.  I did try the 1.5" hose I had between the CT & DD, but still had the lid lifting off.  Maybe I need to go to 2.5"??

 

[Bohdan]

Your basic problem is that the CT is a high pressure, low volume exhaust. The high pressure is required to handle the small hoses, that are usually used with the CT, and to catch the dust and chips generated at a concentrated source like a router or saw blade.

For a planer you need a high volume, low pressure exhaust and this requires large diameter plumbing. 4" hose is normally the minimum if the exhaust unit is close to the machine.

You may be able to get it to work if you replace the hoses with the largest sizes compatible with the DD and CT but the blower in the planer may still overpower the CT with excess air volume.

You could also try the system with only the DD connected and see if that works any better as far as the air flow and chips are concerned but it won't collect the fine dust that is really the problem.

 

[Wooden Skye]

The biggest problem with using any shop vac or ct with a planer is the size of chips created by the planer.  I tried and even with DD didn't work well so created my own system.  My system works well for me, but may not for everyone.  It goes something like this: roll planer onto drive way, plane boards, get out leaf blower and clear the chips. 

 

[Kev]

I've seen demos of the DW735 with a large hose going directly into a cloth filter bag and collecting the majority of chips (but obviously not the fine dust). It's a more effective option than taking it through a CTnn setup.

If you want to use the DW735 indoors and keep the place clean, you'd really need a high volume collector.

 

[rst]

Try your set up with the 50mm hose and you might have better luck.

 

[BarnyardTim]

Thanks everyone for the tips. Works well with larger hose.