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jointer -- variable speed?

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Forum topic by JeffP posted 02-26-2015 05:51 PM 523 views 0 times favorited 9 replies Add to Favorites Watch
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JeffP

573 posts in 857 days


02-26-2015 05:51 PM

Topic tags/keywords: jointer

Just saw a CL posting for a small delta jointer.

It has a variable speed knob on it. Don’t think I ever saw this as a feature before.

When would you ever get better performance from a jointer at a lower speed?

-- Last week I finally got my $*i# together. Unfortunately, it was in my shop, so I will probably never find it again.


9 replies so far

View pjones46's profile

pjones46

986 posts in 2108 days


#1 posted 02-26-2015 06:00 PM

Never saw one. I would think the higher the speed of the cutters, the better the cut.

-- Respectfully, Paul

View Tennessee's profile

Tennessee

2410 posts in 1980 days


#2 posted 02-26-2015 06:03 PM

Yes, I cannot imagine why I would want to slow down the cutters on my jointer. It would possibly cause chattering, visible cut marks, and chip-out.

-- Paul, Tennessee, http://www.tsunamiguitars.com

View Rob's profile

Rob

704 posts in 2536 days


#3 posted 02-26-2015 06:19 PM

What are the actual RPM ranges? Are they fast and faster, rather than slow and fast?

Depending on the setup, I suppose running at a lower speed may give you more torque for cutting harder material.

-- Ask an expert or be the expert - http://woodworking.stackexchange.com

View JeffP's profile

JeffP

573 posts in 857 days


#4 posted 02-26-2015 06:22 PM

@Rob
It is very precisely calibrated from “1” to “5”. :)

Also, it is a knob rather than gearing/pully-size, so I don’t think you get any mechanical advantage for more torque at lower speeds with this one

-- Last week I finally got my $*i# together. Unfortunately, it was in my shop, so I will probably never find it again.

View MrUnix's profile

MrUnix

4231 posts in 1664 days


#5 posted 02-26-2015 06:30 PM

If it’s the 37-070 6” bench top jointer (I think it’s also known as the JT160), the speed range is 6000 to 11000 RPM, and has two knives, so that makes it 12000 to 22000 cpm using a 5 position switch (6000, 7250, 8800, 9750 and 11000 rpm settings). It has a chart on the machine that shows recommend speed ranges for cutting various materials like plastic, soft/hard wood, etc..).

I don’t have one.. just reading from the manual.

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View Bill White's profile

Bill White

4456 posts in 3426 days


#6 posted 02-26-2015 06:57 PM

The terms Delta, small, and jointer don’t make me too happy.
Bill

-- bill@magraphics.us

View MrUnix's profile

MrUnix

4231 posts in 1664 days


#7 posted 02-26-2015 07:06 PM

The terms Delta, small, and jointer don t make me too happy.

The terms “small” and “jointer” shouldn’t be used in the same sentence, regardless of manufacturer :)

Cheers,
Brad

-- Brad in FL - To be old and wise, you must first be young and stupid

View Rob's profile

Rob

704 posts in 2536 days


#8 posted 02-26-2015 07:17 PM

That chart that Brad and the manual referenced regarding recommended speeds for different materials is helpful. If you cut plastic too fast, you can melt it. I suppose that would be as good a reason as any to slow it down.

-- Ask an expert or be the expert - http://woodworking.stackexchange.com

View rockindavan's profile

rockindavan

299 posts in 2101 days


#9 posted 02-26-2015 07:37 PM

I had the jt160. The speed setting was continuously variable, not preset speeds. The only reason I would turn it down was if it was late at night, it was a bit quieter.

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