Thanks: 0
Likes: 0
Needs Pictures: 0
Picture(s) thanks: 0
Results 31 to 40 of 40
-
7th May 2011, 01:10 AM #31
-
7th May 2011 01:10 AM # ADSGoogle Adsense Advertisement
- Join Date
- Always
- Location
- Advertising world
- Age
- 2010
- Posts
- Many
-
7th May 2011, 01:16 AM #32
In fact I am up against my ignorance boundary. I know jack about lapping (apart from the foolishness of trying to "lap" a plane sole on glass years ago). I suppose that diamond paste and some kind of tool would allow you to knock down the high spots. The idea of spotting with another 100kg+ granite for dozens of cycles makes me tired. (And I have a crane)
-
7th May 2011, 08:05 AM #33Pink 10EE owner
- Join Date
- Aug 2008
- Location
- near Rockhampton
- Posts
- 4,304
lapping it would be easy....
But how are you going to know where to lap and how much to lap and when to stop lapping?
I know it is bloody frustrating to see plates in the US for $50 and they are $700 here...
-
7th May 2011, 09:19 AM #34
Here's a lengthy thread on why you cannot affordably lap your own plates:
Lapping A Granite Surface Plate - The Home Shop Machinist & Machinist's Workshop Magazine's BBS
As RC says, the spectre of cheap granite in the US haunts all of us. As does everything else. I just bought a couple of machine lights for $60 each. The same lights here are almost $900 (nine hundred) each. That's gotta be a record disparity.
Getting back to the plates, I am going to see if I can get one on an ENCO free shipping deal sent up to a car importer for forwarding to me.
Greg
-
7th May 2011, 10:15 AM #35GOLD MEMBER
- Join Date
- Jul 2006
- Location
- Adelaide
- Posts
- 2,680
thats it.... we all need to all immigrate to the USA
"prices"...it also happens with clothing..in my case icebreaker thermals...going to be getting real cold in the shed for the next few months ..... here in adelaide it cost me 130 for a pair during a sale...can get the same stuff out of NZ for NZ$130.00 thats AU$96.00
if you order NZ200 or more you get free freight...and you $20NZ bonus voucher for every 100 you spend....who's gunna be a warm toastie in their shed this forthcoming winter when machining stuff....ME!!!!
(pm me if you want the web site)
-
7th May 2011, 10:54 AM #36Senior Member
- Join Date
- Dec 2010
- Location
- Syd
- Posts
- 232
Bought a few odds and ends via Alibaba and haven't had a problem - yet, touch wood! Last quote was CIF to port, but that's where you get the rough end of the pineapple, as others note. If there's processed wood in the shipment it's normally OK...at least from the first world, raw timber will be another matter.
Know sfa of much anything to do with lapping, had four cast iron surfaces done some years back though, for a few hundred bucks. This mob was helpful with suggestions and I imagine lapping a large surface by hand would have me at least, suicidal......Kemet International - Precision Lapping and Polishing with Diamond Superabrasives
-
7th May 2011, 12:35 PM #37Pink 10EE owner
- Join Date
- Aug 2008
- Location
- near Rockhampton
- Posts
- 4,304
Be aware with shipping charges you have several organisations to go through.. All separate..
You have the boat that delivers it..
Then you have the state transport department who pilot the boat to get it alongside the port.
Then you have the port authority who runs the port, they look after the tying up of the boat and charge the boat owner for the length of time it stays tied up.. more fees
You then have AQIS to inspect the freight. Another charge
You then have the stevedoring company who unloads the boat.. more fees
You would be forgiven to thinking that docking a boat and getting freight off is a simple procedure like unloading a car or a plane but it most certainly isn't..
It opened my eyes when I saw it all in action..
-
7th May 2011, 01:10 PM #38
My wife works for one of the major retailers (who were in on the push to cripple online shopping a couple of months ago). She'd like to buy one of her products, but even with the 20% staff discount it is still twice the (shipped) online price. The irony that she is part of the reason for high local prices does not escape her.
If I thought there was a market I'd import a container load of these things and sell 'em at some reasonable mark-up.
-
7th May 2011, 01:17 PM #39SENIOR MEMBER
- Join Date
- Oct 2007
- Location
- Sydney
- Posts
- 2,340
Greg I thought it was actually possible to scrape granite too? I'm not about to try it on mine, but given that it scratches it should be able to be scraped if my logic isn't too flawed I think the reason that they're not scraped is firstly because they are typically very heavy, and lifting one on/off a master plate would be a nightmare, even for a smallish plate like mine. But mainly the question would be why be would you? The granite is very stable, so the only reason it should be anything other than as flat as the day it was lapped is due to wear. None of us here are ever going to wear out a granite surface plate I'd suggest. For professional shops that do in fact wear their plates I understand they send them back to be relapped flat again.
As far as lapping 3. Good luck with that! Yes the principle is sound but I'd expect you'd give up in frustration a long time before it was flat enough for serious work.
The irony about the access to cheap tooling in the US is that most of it comes out of China. There's therefore no good systemic reason for the massive disparity in pricing between here and there. Too many fingers in the pot, all trying to take too much from too little is typically the reason for it.
Pete
-
7th May 2011, 09:57 PM #40
Yeah, you've got it Pete...too few buyers having to support too many people in the supply chain.
WRT to scraping a granite flat: You are right that it would take three (in which case you have already paid more than one good one). Or it would take a good master, in which case why scrape the other one?
Earlier this evening I was trying to evaluate a milling machine component on my granite flat and ran out of room for indicator stands etc. One more damned thing to feel inadequate about.
Similar Threads
-
Unit Conversion Charts/References - Lumber Sizes etc.
By soulspirit in forum WOODWORK - GENERALReplies: 13Last Post: 16th October 2022, 11:29 PM -
Some Useful References, especially for newbies.
By Ropetangler in forum METALWORK FORUMReplies: 6Last Post: 10th July 2010, 11:57 PM -
BOB References
By seafurymike in forum CNC MachinesReplies: 5Last Post: 1st May 2010, 08:28 PM -
Importing U.S. Mig?
By martrix in forum WELDINGReplies: 30Last Post: 23rd February 2009, 11:09 PM -
TSC-10HB: missing bolts, needs references
By EMistral in forum HAND TOOLS - POWEREDReplies: 4Last Post: 2nd May 2005, 11:11 AM