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Machine Polishing Need help with Machine polishing

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Old 17-10-2007, 02:28 PM   #61
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Quote:
Originally Posted by Miracle View Post
Arrr the pig tails, what new Astons come with fresh from the factory!

So far when finishing with the 4000 we've been fairly successful at not leaving any.

Although some initail test patches did show signs around the edges where we hadn't worked it evenly enough.

Last edited by Epoch; 17-10-2007 at 02:30 PM.
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Old 17-10-2007, 03:50 PM   #62
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I should read all the post first

I might ahve to have a go by PC now!
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Old 17-10-2007, 03:55 PM   #63
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You could, and others have depends on the throw of the PC really.


Don't use too much water either

If your gonna stock them Tim the cheapest i can find is £22.00 plus VAT for a box of 12
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Old 17-10-2007, 05:14 PM   #64
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So is it best to steer clear of the random action and stick with a pure rotary motion?

I assumed that a random action would give a better finish but I can understand the comment out pig tails etc being an issue.

I have a plethora (sp) of compressors and air tools, never seen one having the benefit over another, except when using water.

Electric version would save having to lug around a compressor though. Will give a few more options a try. Dont think any of my electric versions have a pure rotary function on them though.

What sort of rpm etc does the Mirka run at?

Any more input welcome.
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Old 17-10-2007, 05:29 PM   #65
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^^ No you do need DA

If you have too much motion it can cause large arcs around the edge. So you want a small throw DA action for finner sanding.

Splashing the water about is the only benefit with the priciple.
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Old 17-10-2007, 05:30 PM   #66
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is it possible to have a few links posted up for few suppliers please???........
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Old 17-10-2007, 05:49 PM   #67
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Quote:
Originally Posted by rallymad_nad View Post
So is it best to steer clear of the random action and stick with a pure rotary motion?

I assumed that a random action would give a better finish but I can understand the comment out pig tails etc being an issue.

I have a plethora (sp) of compressors and air tools, never seen one having the benefit over another, except when using water.

Electric version would save having to lug around a compressor though. Will give a few more options a try. Dont think any of my electric versions have a pure rotary function on them though.

What sort of rpm etc does the Mirka run at?

Any more input welcome.
I feel that the short throw of the Mirka is the way forward in comparision to the much longer throw of certain R/O sanders (the PC included).

From experience of sanding many different coatings over the years with various items of equipment, I've come to the conclusion that the longer the throw of the random orbit, the better the tool is suited to the more aggresive of abrasives. I know that the PC is good at removing large quantities of paint when used with 60 grit discs


The speed of the Mirka is fully adjustable, similar to the PC. Jon and I only ran it on the lower end of the speed range, though I do feel that the quality of finish left would improve by running the machine at a higher speed. This is something that I would like to try next time I use Jon's machine.

I think that the random orbital action of the Mirka suits the finish better than a rotary action would. I've seen people dressing aluminium sheet using a rotary sander, leaving behind a shell effect. Same again though, I'm interested in trying out this theory first chance that I get. I know that you can get those little 4" air rotaries from Farcela etc for next to nothing.
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Old 17-10-2007, 07:50 PM   #68
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^^^ I'm gonna need a bigger compressor then!!!
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Old 17-10-2007, 09:07 PM   #69
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steev the fracla polishers are random orbital i have one they are good for small parts like bumper grills ... i have just got a full size air roto to im only just getting used to it but it is so much lighter than a lecy one.... only thing is you need a big air comp to run two full time i have a hudravaine its huge and can run loads of stuff at the same time

i have the fracla rep coming to the place where i work soon to show so new kit and stuff might be interesting, or not
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Old 17-10-2007, 10:35 PM   #70
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looks like the Rubbish boys original edition, is doing pretty well john....



A coat was applied to the bonnet
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