Member postings for dcosta

Hello OMG. Good after noon.

Thank you for the information.

OMG: Commercial shears do indeed work with a slight gap between the blades (as do punches etc). As I recall, about 10% of the thickness of the material being cut is the rule-of-thumb.
DC: When possible I will try to use your recipe and give account of the results in the forum.

OMG: I have a 12 "shear/roll/bender and it has adjustment screws to set the blade clearance. And if adjustment screws are provided, presumably they are intended to be used. You didn't mention it, Dias, but does your 8" machine have the adjustment screws?
DC: Yes it has. But I did not dare to change its position. I simply push the blade strongly against them and pressed strongly screws retaining plate.

OMG: It's possible, if the machine is only made for very thin material, that they simply don't bother with the blade clearance but thicker sheets are likely to give rather high loads.
DC: As I wrote above this is not the case.

OMG: That said, it can be pretty fiddly to get an optimal setting on these little machines (also depends a bit on how hard/soft the material is).
DC: Yes, I think you're right and I will surely have a lot to learn by practice wishing, however, not to make big mistakes that ruin the blades prematurely.

Thank you
Dias Costa

Hello Ketan.

Firstly thank you for paying attention to my post and give me some information that helps me to feel more secure in using the 8” Mini Shearing and Bending Tool.
Secondly I have to apologize for not having read end to end the Assembly and Operating Instructions accompanying the tool before writing my post. The fact that I have found several orthographic errors led me to move ahead without giving it the attention I should.
The manual you recommended me, although it is written in better English has essentially a similar content of yours. However there are some differences (eg: on the use of T-Block).
Amalgamating both manuals, something I intend to do after knowing better the tool, I hope I'll get a better manual.
I take this opportunity to provide you with the corrected address for the Mikromark manual: http://www.micromark.com/html_pages/instructions/84734i/84734-shear-brake.pdf

Thank you
Dias Costa

Hello Graeme, good to “hear” you.

CB: Have you directec these questions to Arc themselves, from past experience Ketan is more than helpful in answering queries.
DC: No, I did adress to Arc a message with some other questions

CB: I suspect there will be some contact of the blades as they perform a shearing action, much like a larger version of hand operated metal shears. If there was clearance between the blades, there would be the potential for thinner material to be drawn in between the blades and distorted and not properly cut.
DC: I think you are right. And it's also logical. However once I didn't try the shearing mechanism before disassemble some parts of the tool, following the instructions in the assembly manual, I feared I not remember the original position.

Thank you for your help
Dias Costa

Hello all!

I bought an 8" Mini Shear and Bending Brake from ArcEuroTrade (AET) and have already proceeded to clean and assembly it as recommended, I think. The manual that come with the tool apparently is not written by someone whose mother tongue is English and only supports assembling.
After mounting already tried to cut and bend thin metal sheet and was impressed.
But, as I've never used a tool like this, I'm afraid of not having it tuned properly.
If anybody own a tool like the one I bought I would like to know:
1 - Is it normal to hear the two blades rubbing on each other when moving the blade up and down without cutting any material?
2 - What criteria shall I use for the tuning of the laminae of the shearing part?
2 - Is there any recommendation that I should follow to not make mistakes and get the most out of the tool?
3 - On the site of AET no reference to the replacement blades. What to do if and when the blades become blunt?

Thanks in advance
Dias Costa

Edited By dcosta on 12/09/2013 19:26:32

Hello all.

Finally I have a small Clark belt & disc sander like the one bought and recommended by Neil (Stub Mandrel) see **LINK** . Thank you Neil.
I've already made some use of it and I liked it.
Thank you all that did help.

Kind regards
Dias Costa

Hello Petrol1head, good afternoon.

I have one like this **LINK** and it may be used as a dividing head adding a set of dividing discs you can find here **LINK** (DP1 Dividing Plate Set for HV4 & HV6 Type Tables). I'm happy with it.

Best regards
Dias Costa

Hello Roger, good evening.

Please see here **LINK** . It's a simple feeding system for a small milling machine but perhaps it has all you need for your lathe. It's made with a simple and cheap stepper driver **LINK**, a stepper motor bought from ArcEuroTrade **LINK** (ref. 160-010-00400) and some adequate power supply.

I'm just a satisfied customer from the companys referred.

Hope this helps
Dias Costa

Edited By dcosta on 02/09/2013 22:23:12

Hello Andrew,

sent you a personal message with a list of the records I found in the free ME_Index **LINK** with the word Howitzer in the tiotle or notes fields.

Hope this helps.

Dias Costa

.

Hello George, good evening.

You say in your message that your mount of the DRO is the same as mine. Please look carefully and you'll see there's a difference: in my milling machine I could position the data cable leaving the reader head in the down side (in both DROs) so I get the benefit from the gravity to take some possible oil away instead of letting it try to enter the reader head by some tiny slit.

Best regards
Dias Costa

Hello Rick,

about an hour ago I posted a message with some pictures pasted in and it didn't appear so I'm using the reference method to the picture in an album.

In my previous message I told you the aluminium profile was a U shaped. I made a mistake. It is an almost L profile shaped.

Also in my previous message I wrote the DRO were bought from ArcEuroTrade. I was wrong as can be seen in the displays. But as much as I know the Warco company doesn't sell this items presently.

I think you can benefit from the observation of the following pictures. X_Axis (and part of Y_axis):

Y_Axis:

Remote display:

Hope this is of some help
Dias Costa

Edited By dcosta on 22/08/2013 15:36:58

Hello Rick, good morning.

I know that I am not responding to your request for help but I think it is significant that follow tell you.

I have a milling machine (Optimum BF20 Vario) which is similar to yours and I do not not use pumped cooler in it.
But the first attempt to fit inexpensive DRO in it, one of those which have the display on the scale, had the problem of penetration by oil and chips even with a protective aluminium angle profile.
Then I found the ArcEuroTrade DRO that doesn't have the display on the scale and has the cable that communicates with the remote display coming from a completely closed box, permitting the cable going to the remote display to be oriented in such way the gravity helps preventing the oil or swarf to enter (the box is completely closed).
Complementing with a protective U shaped aluminium profile (with one leg shorter to allow passage of table fastening screws) never more had problems with DRO being affected by swarf or by oil.
Let me say to you that the ArcEuroTrade DRO always worked perfectly. Please see **LINK** .

Nothing connects me to ArcEuroTrade (except being a satisfied client)

Hoping I have helped
Dias Costa

Hello Norman, good morning.

I appreciate your opinion.

After reading your post I re-started searching and found there are some companies offering special made belts. Perhaps later, when the ones I'm going buy now will fail, I'll find some company able to make new ones covered with Zirconium...

Best regards
Dias Costa

Hello Phil, good morning.

I thank you for your help.

Your information is precious and comes in the exact moment I am deciding what discs and belts to order from MachineMart.
I can't find ready made Zirconium “Zirconia” discs or belts expressly for the Clark CBS1-5 belt and disc sander.
I searched for Zirconium sanding rolls and found some suppliers. However, as I never tried to glue a sand belt I'm not sure about this way. Found **LINK** some successful experience and perhaps I'll try it later.

Best regards
Dias Costa

Hello, good after noon.

My first milling machine was an Optimum BF20 Vario which after about two years of use was sent to the distributor in Portugal to some light repair. There, someone dropped a heavy object on the table causing deep dents on it.
The dealer replaced it with a new one and some time after its electronic crashed. The distributor's technician came to my workshop and replaced the electronic board with a new one and at the end of the installation I did ask him questions about the load capabilities that the machine was capable of. And he promptly did a test that left me amazed.
He asked me a chunk of cold rolled steel and set an end mill 10mm in diameter in a collet.
Then he started a cutting with about 10mm in depth, manually feeding at high rate which took only a few seconds to both the metal and the cutter to be red hot. He continued to cut a few more seconds until the cutter has cut about 50mm in length and almost all the time the metal and the cutter were some variation of red hot.
At the end he told me something like this: if with this load it did not broke its not likely ever becomes damaged by overload. And, indeed, so far never broke ...

After that I concluded some machines are only similar at first sight...

Best regards
Dias Costa

Edited By dcosta on 17/08/2013 18:35:20

Hello Neil,

Finally, after several days Chronos told me they don't export grinders or sanders to Portugal and so I looked for an alternate supply. Remembering your post I asked MachineMart about exporting to Portugal and happily they do so.
So I thank you for your suggestion.


Best regards
Dias Costa

Edited By dcosta on 16/08/2013 21:18:51

Hello Richard,

You can download and use this **LINK** anywhere you want. It runs on Windows and It's completely free.
In the same place you'll find three an applications: one for ME other fro MEW and other for EiM.

Dias Costa

Edited By dcosta on 13/08/2013 15:32:17

Hello all,

One of the sanders I may buy is a Chronos/Clark one. See here **LINK** and then find CLARKE BELT & DISC SANDER (Ref: CS46D). Chronos sells packs of sand belts and sand discs to that machine but, as the sander is sold for wood, perhaps that belts and discs are not useful with metals. Does anyone know if they are?
For discs and belts see **LINK** .

Thanks in advance
Dias Costa

Hello Neil,

Neil: As I've got a bench grinder and smaller one powering my T&C grinder I bought one of THESE: It works really well.
DC: Chronos doesn't sell it to Portugal fearing it may be damaged in the way.

Your help is much appreciated.

Dias Costa

Edited By dcosta on 12/08/2013 16:46:18

Hello Phil, good morning.

Thank you for your suggestion.
The store I went to Aldi is located a few kilometers from my house and there is no public transport to there.
I have a beautiful bike (a Kalkhoff) with support from electric motor and I do not drive cars.
Could go by bike but as the grinder is heavy and the box is great could not carry it on my bike panniers.
So for me to move to Aldi I have to take a taxi and pay about 8 Euros to there plus 8 Euros to home.
Aldi is not the store where we make other buys for home so, if I do not like the grinder I'll have to spend another 16 Euros.

Accounts done, if I can include grinding (whatever that may choose) in the shipment of an order that I have prepared for Chronos, maybe expending a few more Euros I make a purchase where the value for money spent is greater.

P.S.: Hope my English is not too bad...

Best regards
Dias Costa

Edited By dcosta on 11/08/2013 00:55:00

Hello Neil, good day.

Interesting information about the font Comic Sans. Thank you.

Neil: I understand that Chester may export, Dias, try emailing them with an enquiry.
DC: I appreciate your suggestion and will try to contact the Chester, but if I can buy from Chronos (which I will also contact) I may save – so am convinced - some Euros on the shipping costs by joining in only one parcel the grinder and other items I intend to order from Chronos.

Best regards
Dias Costa