Archive for the ‘FAQ’ Category

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Difference between air cooling and water cooling spindle for CNC router

Thursday, June 16th, 2011

When choosing cnc router, spindle is a big point that customers will ask.

There are two types of spindle for making a cnc router or wood router: air cooling and water cooling. All people knows that air cooling is expensive, while what is the real difference between the two types of spindle?

About air cooling first:

1. air cooling looks professional, nice in appearance. The most famous brand is HSD in Italy.  There are many other manufacturers in other countries, too. Like here, Redsail, China(advertising for ourselves)

2, Its installtion procedure is very simple and easy. It can work well just with air, no need to recycle like water cooling.

3, of course no pollution.

About water cooling:

1, cool the spindle by cycling the water. Its temperature will not be higher than 40 degree, so its cooling result will be better than air cooling(air cooling works by a fan). It can longer the life of the cnc routers.

2, No noise

3,  Its working life is longer than air cooling

4, finally, its cheaper, obviously.

But, there is a not very good point: water needs to recycle, so we needs to use a pipe, and it has possibility for water leaking.

Compare the two spindles, we can find that, if you have lots of money, and wants a nice appearance machine, aircooling will be good choice.

But to be practical, water cooling is also good choice.

It depends on what kind of needs you have, and what budget you have.

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Laser engraving rubber stamp

Saturday, June 11th, 2011

Stamp is a kind of special material.

Redsail provide two types of machine for making stamp. One is laser engraving rubber stamp from Redsail. The other is flash stamp machine.

Today we are talking about laser engraving stamp.

Two main uses:

1, self ink using stamp: we use laser engraver to engrave on rubber stamp, making self-use stamp or goverment or company stamp. It has to work with ink.

2, for carton box or plastic box: some people, they use laser engraving stamp to print log or files on the surface of the box.

Stamp laser engraving is not easy to do.

First, rubber laser engraving sometimes has to be smaller letters, and has to be deep. While laser beam is not thin enough so for rubber engraving, we have to use small powerful laser.

Second, in order to print well on the paper or other surface, we better make laser rubber engraving with an angle but not straight up directly. We call it grade-engraving.

Third, we have to pay much more attention to the scan gap and working speed, also back lash.

In order to make good laser engraving rubber, please go for redsail technical department.

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Laser cutting wood

Saturday, June 11th, 2011

Wood is another type of main material that the laser machine works on. Both cutting and engraving can be down very well. People use it to make artcraft, models for buildings or airplanes, or many other types. Most times, laser will burn wood , then wood surface will become black or yellow, for model making, black will be no problem but for common show, we have to take more attention.

There are many types of wood, some is very hard and some is soft. Laser cutting wood is only with good result for soft one, but for laser engraving, even hard wood will be with good result.

So when you want to do laser cutting wood, must be sure that we can do it with laser, and do it with good power, good speed. Too powerful will burn it, while small power can not cut it through. So it needs practice and time to get a better result. During this period of time, customer will become an engineer which will be a nice thing.

Now you can find here for some nice photos sample.

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Laser cutting acrylic

Saturday, June 11th, 2011

For acrylic cutting, the most common machine we are using is cnc router and laser cutter. In other articles we said that, laser cutting will be with better result then cnc router because it needs polishing after cnc router working.

So laser cutting acrylic now is the most popular way for many advertising companies; Redsail has different models for laser cutter, and of course, the more power we are using, the deeper acrylic we can cut.

Let’s see an example, Redsail laser cutting machine model CM1490–one of the most popular model in different areas. Because most acrylic size is similar with the machine size. We can install it with different power laser tube, and the cutting result will be as following:

60w laser tube: can cut about 10mm acrylic

80w laser tube: can cut about 15mm acrylic

100w laser tube? can cut about 20mm acrylic

130w laser tube: can cut about 25–30mm acrylic

But actually, the cutting result has great relation with laser tube quality and also the acrylic quality. And to get the best result we have to get a very good alignment.

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Plotter FAQ: Why the cutting result is of distortion or its not closed?

Friday, December 31st, 2010

 Sometimes when you are operating a vinyl cutter, you put the vinyl there, but when you finish you find the cutting result is of distrotion? or its not closed file. why is that?

Check it here first:

1. too much pressure, or the blade bit is too much longer out of blade holder, or the vinyl (paper) is too dirty, or the vinyl is too soft(so when the roller is moving, materials follow the moving and become not flat)

2. software setting is not good. Please check software setting.

3. motor maybe loose, so it may make the carriage cant move correctly following the motor

4. its possible that the blade is not moving smoothly in the blade holder, please check out and clean if necessary.

Check these first, and please contact Redsail team if it does not help.

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Plotter FAQ 3: Why during working, some parts are cut well but some not?

Saturday, December 25th, 2010

When cutting plotter is working, sometimes you can cut some parts through but in some other parts you can not. why is that?

Reason:

1. blade comes out of blade holder too much; the correct way is, blade bit should be 2/3 of paper thickness, so that we can be sure it can cut scratch the paper even with higher pressure.  

2. cutting strip is used for quite long time, or the new cutting strip is not attached well. So the vinyl cant be flat.

3. Distance between blade holder is too much or too less(correct distance should be about 2mm).

For more details, please contact Redsail .

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Plotter FAQ 2: Why plotter has no response?

Saturday, December 18th, 2010

Cutting plotter  has no response after turning on, only the fan is moving, no message on the LCD, what shall I do?

 Answer:

1. check the voltage of the power supply—if there is no 5v, CPU cant work normally, LCD will no display.

 2. if voltage is ok but LCD no display, please check CPU.

For other question, please contact Redsail.

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Plotter FAQ 1 : Why plotters go like being crazy?

Saturday, December 18th, 2010

Answer:

1) choose correct software setting. If there are different manufacturer in software, please choose redsail.

2) connect plotter with both USB and serial port which is not correct

3) files are stopped without finishing.  Cutting plotter may become crazy working if we restart it

4) operators work do other job with same computer during plotter working

5) software is corrupted or the computer has virus

6) Other working machine signal affect plotter working signal

7) Please check plotter serial port or USB port

If plotter still does not work after checking a lot, please contact Redsail tech team.

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Laser FAQ(1)

Thursday, November 25th, 2010

When you get a laser machine, you face problem after long time use, we have to check and make it work like we were professional engineer. Now Redsail is teaching you how to do with a laser problem:

Phenomenon?machine has no response after connecting to power

Steps to solve it?

1. be sure you have correct input power?220V/50HZ)

2 .Turn on power switch, if the switch light is off, maybe the voltage or power supply has problem, please check and change power supply if necessary. If power switch light is on, recheck power supply. Test the input 220v is normal or not with a multimeter; if 220v is not good, please repeat the above steps; if 220v is good, check output voltage(36v&24v) of power switch is good or not. If its not good, please change the power supply.

3. If every output voltage is correct, test the input voltage is good or not with a multimeter; please check the connection between power supply and control card if no voltage; if the input of the control card is ok., please check the cable that connects control card and control panel(black serial cable)—test the red and black wire inner it with 5v or not; if there is no 5v, please change control card; if there is 5v but control panel still show nothing, please replace the control panel.

4. If both control panel and control card are ok, but the machine still does not move, please check if the motor driver light is on. If the light is off, please check if the connector for motor driver and power supply ok or not; if the connection is ok, please test if the motor driver’s +V is normal or not(it should be 24/36v); and input voltage +5V is normal or not. If the voltage is normal but the light is not on, please change the motor driver; if the motor driver light is on, test the Y4 of the control card—-test pin 1 and pin 3 voltage(Y axis); also test pin 1 and pin 3 of the Y5(X axis), then click the arrow of the control panel, if nothing happen before click and after click, please change the control card; if the voltage changes, please check the connection.

5. If everything above is working well, please change motor directly (if one of the axis is with problem, we can change the two motor drivers of X and Y to see which one is with problem.

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Laser problem 1–why does the laser only move seconds then stop?

Saturday, August 7th, 2010

sometimes when you operate Redsail laser engraver or laser cutter, you may face problems as below:

Yesterday it worked perfectly, but today, laser machine only moves several steps, then it stops. Why?

If you check carefully of the machine, next to the control panel, there is a E-STOP—its emergency stop. Means, when you face problem, press this button, the machine will stop immediately to keep operator safe.

But after push this button, if you do not pull it out, laser engraver or laser cutter will keep under this condition. Then when you restart the machine, it will only move few steps then stops.

So, dont worry, pull the button out.

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