LumberJocks

Jointer not leaving smooth surface

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by Mrowell posted 06-21-2016 11:21 PM 686 views 0 times favorited 18 replies Add to Favorites Watch
View Mrowell's profile

Mrowell

65 posts in 606 days


06-21-2016 11:21 PM

Topic tags/keywords: jointer problem wood tools surface question poplar milling help

I just got my new Grizzly 8” parallelogram jointer set up. Set up seemed pretty strait forward. After running a couple poplar boards through to test it out I found it is not leaving a very smooth surface? I have what almost looks like chip tear out but slightly different and across the whole board, not just the ends? I am new to a jointer so any help would be greatly appreciated!

-- Matt R


18 replies so far

View bbasiaga's profile

bbasiaga

757 posts in 1462 days


#1 posted 06-21-2016 11:24 PM

Got pics?

With little to go on, I’d ask if you ran the board through with the grain in the right direction.

-- Part of engineering is to know when to put your calculator down and pick up your tools.

View MadMark's profile

MadMark

978 posts in 920 days


#2 posted 06-21-2016 11:31 PM

Rotate the stock 180° and try again. Knots have wild grain and some chipout is normal. Lack of suction from the DC can cause chips to clog and get recycled into the cutters.

When in doubt, hit it with the bigger hammer!

M

-- Madmark - Madmark2150@yahoo.com Wiretreefarm.com

View Trollin4Tuna's profile

Trollin4Tuna

7 posts in 399 days


#3 posted 06-22-2016 12:46 AM

Is it the G0490w? I had one that left a terrible finish in addition to the fence being out of square by 3/4”. Also the rabbit table was cracked.

After a couple weeks back and forth with the technical department they had me send it back. They gave me a curtesy refund since it was out of the 30 day return period even though that was their fault.

All this being said, I’m going to get another one and hope for the best. Their customer service is great but with a machine that big it’s still a hassle. The actual jointer was almost dead coplaner out of the box. Too bad the fence was awful.

View Mrowell's profile

Mrowell

65 posts in 606 days


#4 posted 06-22-2016 01:49 AM

First off thanks for the responses! I did try flipping the board 180 to check if grain direction was wrong and I got the same results.

I’ll double check dust collection because I didn’t even think about that.

Yes it’s the g0490w, and after reading your comment I went and took a look and my fence is also out of square so I will be contacting them.

-- Matt R

View runswithscissors's profile

runswithscissors

2192 posts in 1492 days


#5 posted 06-22-2016 02:34 AM

Is the fence out of square vertically, or unsquare from front to rear? The former is important, the latter not so much.

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

View JBrow's profile

JBrow

819 posts in 387 days


#6 posted 06-22-2016 02:37 AM

Mrowell,

Lighter cuts could help a little. I like a 1/32” deep cut, or even lighter. Takes longer to flatten or straighten a board, but lighter cuts seem to produce a smoother surface for me.

View pintodeluxe's profile

pintodeluxe

4859 posts in 2280 days


#7 posted 06-22-2016 04:18 AM

If the board looks rippled across the full width, your knives are set incorrectly.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View Mrowell's profile

Mrowell

65 posts in 606 days


#8 posted 06-22-2016 10:49 AM

-- Matt R

View rwe2156's profile

rwe2156

2198 posts in 948 days


#9 posted 06-22-2016 12:04 PM

I wouldn’t be so quick to blame the machine because it looks to me like reversing grain to me. The other part of the board in the pic looks smooth. Reversing or swirling grain is often associated with knots.

The only way to avoid tear out in these cases is light passes/freshly sharpened blades or a spiral cutting head.

I would check the blades for sharpness and make sure there is no remnant of the goo they put on everything.

Then try another board. I’m sure it will be alright.

-- Everything is a prototype thats why its one of a kind!!

View Aj2's profile

Aj2

692 posts in 1265 days


#10 posted 06-22-2016 01:01 PM

Just looks like dull knives.The wood looks like popler,You could try honing the knives still in the machine.
Check for a high one first.

View Mrowell's profile

Mrowell

65 posts in 606 days


#11 posted 06-22-2016 02:10 PM

Do you typically have to hone new jointer blades? I was doing pretty light passes but Ill do even less and see if that helps!! Ill also double check the blades and make sure they are clean!

I wouldn’t think the knives are dull since they are brand new but I guess you never know!

-- Matt R

View pintodeluxe's profile

pintodeluxe

4859 posts in 2280 days


#12 posted 06-22-2016 04:48 PM

Now that I see the picture, that’s just gool ol’ tearout. Straight knives are notorious for causing tearout. Sure you can try reversing the grain direction, but often the grain direction changes across the length of the board. I have experienced tearout with brand new straight knives on my jointer. It is just something you will experience from time to time.

Try cleaning it up with the planer. Take light cuts, and angle the board slightly. As a last resort you can wet the wood slightly with a spray bottle. Wet wood fibers are less likely to tearout.

Ultimately, tearout is what made me install a helical head on my planer. A helical head with carbide teeth has a shearing action and nearly eliminates tearout. They are costly, but hey, so is the lumber I ruined with straight knives.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View Mrowell's profile

Mrowell

65 posts in 606 days


#13 posted 06-22-2016 06:23 PM

Ok thank you! I will try to do shallow passes and plane/sand out anything else! I was going to order a jointer with a helical head but it was on back order for several months and I needed a jointer. I plan to upgrade once these knives get dull or I have a little spare cash.

Thank you all for the input!

-- Matt R

View rwe2156's profile

rwe2156

2198 posts in 948 days


#14 posted 06-22-2016 06:40 PM

Yup.

-- Everything is a prototype thats why its one of a kind!!

View Mrowell's profile

Mrowell

65 posts in 606 days


#15 posted 06-22-2016 06:47 PM

I just wish I had a 20” planer lol I have a little 12”

-- Matt R

showing 1 through 15 of 18 replies

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com