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1st Apr 2013, 12:21 AM #16Most Valued Member
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- Oct 2007
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- Sydney
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- 3,112
Greg I'll be honest, the only reason the linisher is used so much around here* is because it sounds more impressive than saying "grinder". Once you have one you'll be able to swagger out of the workshop and say "Oh I just quickly ran those over the linisher", which will of course result in impressive "ewws" and "ahhhs" from your admiring fans. In contrast, "Yeah mate, I screwed up the welds and so ground the #$$% out of them" may well mean precisely the same thing, but of course the latter never pulls the chicks
*arguably second only to my FBH
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1st Apr 2013, 01:15 AM #17
So you've seen my welding then, Pete? The 5" angle geinder is the biggest single advance in the welding arts since electicity.
I have covetted a belt sander/linisher/linear grinder for a while, but it has been a low-grade covet. Second to say...my neighbour's wife, for example. But only in the hypothetical sense, I hasten to add. Lest Cruella discover my speculative ruminations.
As a neuveau neathdrethal I may have to forego my linisher aspirations in favour of an abrasive more suited to my level of technological achievement.
Back to scrubbing my handiwork with sand and a pineapple.
GredIt's all part of the service here at The House of Pain™
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1st Apr 2013, 02:55 AM #18Most Valued Member
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- Nov 2007
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- melbourne australia
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- 3,228
At least you don't covet your neighbour's ass Gred.
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1st Apr 2013, 07:02 AM #19Philomath in training
- Join Date
- Oct 2011
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- Norwood-ish, Adelaide
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- 59
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- 6,541
I have a makita 9032 - that takes a 9mmx533mm belt. It is amazing how often that gets used for smoothing things out. Makita also do a machine that takes a 30mm wide belt (9031 I think). For those who don't have the space for a grinder fitted with linisher that might be a consideration. (I also have a 100mmx950mm linisher - that only gets used occasionally)
One thing that was reccmmended to me the other day when I bought some belts was to avoid the red/brown belts. The blue (zirconia?) are far better. This from a sales guy speaking from his personal experience with a 9031. Perhaps it's the flex when going around the wheel.
Michael
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1st Apr 2013, 07:20 AM #20Most Valued Member
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- Sep 2011
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- Ballarat
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- 65
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- 3,103
May as well throw mine into the ring as well. The 50 x 915 multitool is the handiest thing I have. Mine is on a 6" Abbott and Ashby and is only slightly underpowered.
Phil
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1st Apr 2013, 07:42 AM #21Pink 10EE owner
- Join Date
- Aug 2008
- Location
- near Rockhampton
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- 6,216
Had a look at what belts I use....
I use 36, 60 and 80 grits..
50 x 914 mm x 36 grit VSM ZK744X Belt | The Sandpaper Man
36 leaves a very rough finish but rips that black oxide off steel in no time flat...Gold, the colour of choice for the discerning person.
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1st Apr 2013, 08:39 AM #22Golden Member
- Join Date
- Jun 2004
- Location
- Kyabram. Vic
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- 632
I have found that my newer build multitool linisher wobbles like a drunken sailor.
There was another thread some time ago about them; the earlier aussie made ones were good and the newer overseas machined ones appeared to be poorly machined with considerable runout machined into them.
The fix on one occassion was to have the centre of the drive wheel machined oversize; a bush pressed in and then machined square to the diameter of the drive wheel. IIRC this solved the problem and runout was negligable.
I was so disgusted with the machining quality of mine (something like 50 thou runout) I put it aside and haven't touched it in about 3 years. One of those must do jobs.
Ken
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1st Apr 2013, 09:05 AM #23Distracted Member
- Join Date
- May 2010
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- Lower Lakes SA
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- 58
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- 2,607
Ken that's disappointing. If it was really that bad it should have been returned. But did you actually measure the runout? I bought a wheel only for an incomplete unit I had and it wobbled horribly. After a bit of sleuthing I eventually spoke to the maker (they try not to deal with retail customers). The guy was nice and explained that they could have a balance problem and it was easy to solve. I insisted it had excessive runout so he agreed to replace it. After that call I put an indicator on it and found the runout was actually not all that bad. I forget the number but I felt sheepish. Anyway I sent it back and fitted the new one and the runout was a bit less. I got it down to around .1mm with a bit of fiddling. But it did vibrate. I followed the balancing advice and got it running very smooth. As soon as a belt is fitted it will vibrate a bit anyway so there's no point getting too pedantic about it.
So to anyone with vibration problems, measure the runout first. If it's excessive (more than .1mm) you need to find out where it's coming from. Cheap nuts can be a major contributor, as well as flanges and even shafts. Remember any error at the shaft will be multiplied many times at a large diameter. If needed you can always mount the whole thing between centres and true the shoulder on the shaft. Post about balancing to follow.
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1st Apr 2013, 09:34 AM #24Distracted Member
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- May 2010
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- Lower Lakes SA
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- 58
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- 2,607
How to balance a Multitool
Once you have the runout reasonable, take a square of double sided tape and stick one side firmly to a small weight. A 5/16 nut works well. Press that lightly onto the inside rim of the large wheel. You will notice there are several segments - 6 I think - choose one at random, make a texta mark and stick your weight in the centre of that segment. Start the machine and observe the vibration by placing your hand on top of the motor. Now try the weight at each segment in turn till you find the one that gives the best result. That's stage one. In case it's not obvious all this is done with the belt off, and nothing mounted on the other end of the grinder. You can speed the process by using a leather gloved hand to slow the wheel.
Next refine the location. Try each side of the segment. You can even move it axially if you want but I didn't notice any difference from that. Once you have the optimum location, make a mark. Then you can then fine tune the weight. Try smaller and larger weights until you're happy. If you want, get a fresh piece of tape and stick firmly. Job done.
Edit: It's simply a trial and error process, and seems Bleeding Obvious, but it was the systematic approach that made some light bulb go on for me.
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1st Apr 2013, 09:41 AM #25.
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- Nov 2008
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- Perth WA
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- 71
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- 6,458
I'll go against the flow. I removed the belt attachment from my PA Multitool about 23 years ago. Mine has a 230mm sanding disc and whilst the table is flimsy, with care setting the table and mitre guide, I have been able to achieve some pretty accurate results. It is one of my most frequently used machines.
BT
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1st Apr 2013, 10:47 AM #26Most Valued Member
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- Oct 2007
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- Sydney
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1st Apr 2013, 11:02 AM #27
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1st Apr 2013, 11:21 AM #28Member
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- Nov 2007
- Location
- mid north coast NSW
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- 92
Getting back to jack620's original question, I checked the two older machines I have access too and they are more different than I first thought. The 915 has a 178mm diamter disc and a140mm dia pulley, the 1220 has a230mm disc and a 178mm pulley. So in comparing the two (older) machines we are not just talking belt length but belt speed! It would have to be checked as to the sizes of the current production?
Graeme
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1st Apr 2013, 11:21 AM #29Most Valued Member
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- Nov 2007
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- melbourne australia
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- 3,228
Thanks for all the feedback gents. H&F are closed today, so I'll pop in tomorrow and grab a 915x50 Multitool and some blue belts in various grits.
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1st Apr 2013, 11:29 AM #30Member
- Join Date
- Nov 2007
- Location
- mid north coast NSW
- Posts
- 92
Jack620, When your there tomorrow check the pulley sizes as they do seemed to have changed sizes on a later flyer that I found in my filing system! If that is so then it would make sense to buy the 915.
Graeme
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