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A Couple of Questions...

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Forum topic by Bobby posted 03-22-2010 03:40 AM 939 views 0 times favorited 10 replies Add to Favorites Watch
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Bobby

84 posts in 1796 days


03-22-2010 03:40 AM

Here are a couple of questions that I’m sure a lot of you can provide answers to… forgive me for sounding like a nubie… but I really am one in these cases.

1. I was the recipient of a variable speed plunge router this past week. I have never had a variable speed and am wondering… in what siituations would I have to use a slower speed or a faster speed?

2. As stated last week… I do have a dust collector… it is a Delta 1 1/2 hp, model 50-840 C. I’ve hooked it up to my thickness planer with hopes that it would solve my problem of the chips blocking up in the hood on the planer. In fact, the 4” hose on the DC blocked up too. I got to wondering… last month I noticed that my Shop Vac wasn’t sucking like it used to. I opened it up and found that the filter was blocked solid. After cleaning it up with compressed air, it was running like it was when it was brand new. Could this be the problem with the DC? Is there a filter in it somewhere that may be dirty and causing it to have less suction? I’ve searched all over for the manual but have come up empty so far.

Thanks in advance!

—Bobby


10 replies so far

View interpim's profile

interpim

1133 posts in 2202 days


#1 posted 03-22-2010 03:44 AM

forgive the lack of the letter between a and d in my po^t^... I will enter a ^ in that place, my keyboard i acting weird.

The ^lower ^peed i^ for larger router bit^.

-- San Diego, CA

View CharlieM1958's profile

CharlieM1958

15777 posts in 2962 days


#2 posted 03-22-2010 03:58 AM

Interpim is correct, even if he does speak with a li^p. :-)

-- Charlie M. "Woodworking - patience = firewood"

View Scott Bryan's profile

Scott Bryan

27251 posts in 2566 days


#3 posted 03-22-2010 03:58 AM

Bobby, with respect to your router question here is a table of router bit speeds:

Router Bit Speeds

Bit Diameter Maximum Speed

Up to 1 inch 24,000 rpm
1 to 2 inches 18,000 rpm
2 to 2-1/2 inches 16,000 rpm
2-1/2 to 3-1/2 inches 12,000 rpm

-- Challenges are what make life interesting; overcoming them is what makes life meaningful- Joshua Marine

View AWood's profile

AWood

43 posts in 2490 days


#4 posted 03-22-2010 04:19 AM

Until I can afford the Oneida mini gorilla (1 1/2 hp) dust collector ….I am bound and determined I am only going to work on this problem once and forget about it….... I bought their Mini plastic cyclone Dust Deputy…? and hooked it up to my Sears shop vac. I have run some stuff through my thickness planer and it sucks as good as it did before I did the work. I believe a few gentleman have done a few Reviews on this site. It is worth the $60 odd dollars and a little work and will prevent your filter from clogging

-- AllWood

View interpim's profile

interpim

1133 posts in 2202 days


#5 posted 03-22-2010 04:46 AM

lol… sorry, i rebooted and my S came back :)

-- San Diego, CA

View Moron's profile

Moron

4717 posts in 2637 days


#6 posted 03-22-2010 05:11 AM

so many questions

so many answers

so little time

-- "Good artists borrow, great artists steal”…..Picasso

View Chuck Shellem's profile

Chuck Shellem

36 posts in 1737 days


#7 posted 03-22-2010 08:01 PM

As I understand it the idea behind the slower speeds with larger diameter bit is to prevent burning. In practice the speeds listed by Scott would be maximum speeds. You may want to test on some scrapes of your harder woods, if it burns slow it down. On the other hand if it doesn’t seem to be cutting smoothly (kind of a jumpy feeling) speed it up some. (This all is assuming you have a good sharp bit.)

-- -- Chuck S.

View bayspt's profile

bayspt

292 posts in 2448 days


#8 posted 03-22-2010 08:36 PM

Variable speed routers are nice for larger bits. If you look at the rim speed of a 1” bit at 24,000 rpm it is 71 miles per hour. the rim speed of a 3” bit at the same 24,000 rpm is around 214 mph. Rim speed would also be the speed at which the cutter is contacting the wood. Woods prone to burning (i.e. Cherry) also benifit from slower bit speed, or fast wood feeding. As to the dust collector question, I will leave that to someone who has a DC. I just have a 6.5 amp ridgid shop vac going through a home made seperator.

-- Jimmy, Oklahoma "It's a dog-eat-dog world, and I'm wearing milkbone underwear!"

View Builder_Bob's profile

Builder_Bob

160 posts in 1803 days


#9 posted 03-22-2010 10:43 PM

My Hitachi router is variable speed, I didn’t think much about it when I got it, but after a few months I consider variable speed a mandatory feature. I’m slowing bits down a lot now, and I get less vibration and less burn. I’m routing out hinge slots today, and the router is set for minimum speed. Its clean, quiet, more managable, less intimidating.

My first use of my 4” Jet dust collector was with a planer. The DC couldn’t cope with the planer output and clogged on each pass. Now that I’ve had it for a while, I realize the problem was that the planer was producing “strings” from the yellow pine I was planing. The strings wrapped themselves around the grillwork in the DC and stayed there until I cleaned them out. Any other kind of wood produced chips which are no problem for the DC.

What does your planer output look like?

-- "The unexpected, when it happens, generally happens when you least expect it."

View Ingjr's profile

Ingjr

138 posts in 1760 days


#10 posted 03-22-2010 11:10 PM

Your dust collector definately has a filter. If it’s the bag type, it’s the top bag. If it’s the canister type, it’s the top canister. HTH.

-- The older I get the faster I was.

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