|Review by Tennessee||posted 09-18-2013 03:17 PM||6761 views||2 times favorited||12 comments|
- Grizzly G0453P 15" Spiralhead Planer update-cutter rotation
- Brand: Grizzly | Category: Planers
UPDATE: When I bought this planer 18 months ago, for some reason I also bought a pack of ten cutters. When I received the planer, I found a very small black piece of cardboard with a little blister pack stapled to it, with a couple of extra cutters. Completely forgot about it and put it with the odd wrenches we all have to collect. In this case, in a clear container with my router table wrenches, planer wrenches, and jointer wrenches, since the tools all sit pretty close to each other in my shop.
This morning, trying to finish, I found that the cutter where I switched out the bolt had cracked so I went for another cutter and found that little piece of cardboard. Along with five extra cutters were: Three extra bolts, two allen style T-20 wrenches, (essentially useless), and two very nice hardened T-20 insert bits that fit nicely into my Husky hand driver which accepts hex bits. Problem solved!
Just chalk that up to a senior moment, please…
FYI, the bolts are still coming out hard, soft, one even had a gouge in the top, most likely from the factory air bit. But I will be done soon. Just wanted to let you all know. And you will go through some extra bolts over time.
Bought this planer about 18 months ago. I don’t run it every day, but definitely a few thousand board feet of lumber has gone through this, all on the initial cutting edge of the four sided carbide cutters.
Recently I’ve noticed a slight raising of grain on certain pieces, it was starting to chip up a little around knots, and when a customer wanted to buy some blank, 2.5MM thick wood stock to make his own pickguard, I really noticed for the first time the cutters were starting to scream like a regular knife planer.
Time to rotate the cutters…
Decided last night after work it probably would take about an hour, so I got a beer, turned on the radio and removed the machine head covers.
First thing I noticed was the bolts holding the cutters are flat head torx. Not a problem, but they are T-20, and that is kind of small.
I found a hand held screwdriver style T-20 torx in my tool box and went at it. Two cutters in, I decided that it would go a lot easier with a Torx ratchet driver on a breaker bar. I had a nice Torx 20, 1/4” drive, and also a 1/4” drive breaker bar with a small extension. Good to go, and faster.
Started noticing that the torque was different for each one. Some came loose OK, some were bears. Factory air assembly, I’m guessing. Kept on going until the first row was finished, but this was taking way longer due to the variance in tightness. Also have to make sure everything is clean underneath the cutters after rotation, and make sure you are hitting about 55 inch pounds going back down. I didn’t use a torque wrench, but you can tell when you’ve tightened thousands of bolts over a lifetime when things are tight enough.
Finished the first row and on the first one in the second row it was immediately obvious that this one was way too tight from the factory. Looking down the row, there were two or three really buried in the cutters. Uh-oh…
Went on the first one and sure enough, the torx stripped out of the head. Did all the usual, used a square driver, tried a screwdriver, allen wrench, actually got a square drive in it really tight, and broke the driver!
Out came the machinists drills and drilled off the head. Removed the cutter and looked at the head. VERY flat taper on the thread side of the head, definitely NOT a normal M6 X 15 flathead torx. Drilled the bolt stem and extracted it with no problem. even though I knew I probably would not find that head, I went over to Ace Hardware and found M6 X15 – 1.00 hardened allen flathead bolts, and although the heads were too big, bought six for 40 cents each.
Ground down a head on one bolt, tapered the backside till it fit pretty good, (fairly flush and below the cutter surface), and torqued it down. Did two more without incident and quit for the night.
This morning I decided that I didn’t want that bastard bolt in the setup with the speed of the head, so bit the bullet and called Grizzly.
Each replacement bolt is $1.00, (bought 10), and also got hit with a $7.95 shipping charge.
$17.95 for ten lousy little M6 bolts.
The cutters, by the way, have the initials JP on each cutter. JP Enterprises is a HUGE carbide manufacturer from India who sells a large line of carbide tools under the Ablaze Tool nameplate. Not sure if these are the same, the font on the Grizzly cutters matches the JP in the logo. I have no idea of their quality, but my cutters did last a long, long time on their first edge, and I got three more edges to go. I also know that when I have to finally replace all 72 cutters, that will be a big hit.
Overall, I am truly happy with the performance of this machine and the life of the cutters. They can, however, take their silly M6 special taper flathead bolts and put them where the sun don’t shine.
-- Paul, Tennessee, http://www.tsunamiguitars.com