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Messages - ROSS

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1
Cutting / Re: Cutting Styrene Plastic
« on: December 09, 2017, 11:53:37 PM »
 Styrene/ABS...It is not recommend to be cut by amateurs and when cut it leaves a slightly melted edge which has to be sanded  smooth. 

Fumes need to be ventilated  via proper ventilation to  the outside via a closed system.

Quote from WIKI mentioned above post..

Various regulatory bodies refer to styrene, in various contexts, as a possible or potential human carcinogen. The International Agency for Research on Cancer considers styrene to be "possibly carcinogenic to humans".
 
Chronic exposure to styrene leads to tiredness/lethargy, memory deficits, headaches and vertigo.


...altho the latter  side effects  are also known in teenagers as a natural occurence  ;D ;D


2
General Discussion / Re: Focusable 5.5W?
« on: December 06, 2017, 04:13:57 AM »
It focuses a very small dot and burns quite well...I have not done a lot with it as I have been busy on another  project.  I def think from the comments that this laser head  is not a new model.

 The one thing on it to check for is that they have wired up the thing correctly. I found on mine they had wired it back to front  so it pays to remove the board from the top of the laser and check all soldered points  underneath!

(PS...I just checked my account with Banggood and IT IS the same model as I bought  February  last year  and cost about 36 (UK  GBP) more.......so a reasonable buy at the latest price.)

3
General Discussion / Re: Focusable 5.5W?
« on: December 06, 2017, 12:32:21 AM »
The one I have (bought about 18 months ago) appears to be the same  and focuses quite small.  The comments from customers about the item shown, goes back to 2015.....ao I don't think its all that new....


4
Trouble Shooting / Re: Eleks maker A3 No Idea how to make it work with grbl
« on: November 27, 2017, 03:17:00 AM »
You are on your way! :-*

5
Trouble Shooting / Re: Eleks maker A3 No Idea how to make it work with grbl
« on: November 27, 2017, 12:41:00 AM »
In view of the heading for this thread......

Whilst the info is available under respective headings for bencut Laser and T2...Can  I suggest that a main INDEX heading on the front page be in RED LETTERING  pointing out that  new laser operators read the following...(insert whereabouts of the PDF.'s of Zax and Ralph)?

 It seems to me that people seem to   not  be reading the  PDFs  available before launching out on a laser using BencutLaser  & T2 and hitting problems.

 IF they read the PDFs and have questions then they can be answered so that the newbie to lasering understands what is being referred to better..

6
J Tech Photonics are selling special glasses to focus the bigger Lasers to a dot !

You got that laser working again yet???

7
General Discussion / Re: Pricing stuff is hard
« on: November 15, 2017, 12:22:01 PM »
When it stops being fun...move on! :-*

8
General Discussion / Re: Instructions on how to install T2Laser over Benbox
« on: November 14, 2017, 02:49:54 AM »
ZAX is your man.  He wrote T" so kook for his posts and then follow the leads under his signature....

9
Laser Safety / Re: Reflection from laser
« on: November 14, 2017, 12:39:11 AM »
That's a pro looking job!...

(By the way...If the "floor" of the laser is solid then you really need a perforated floor...something like expanded aluminium..this allows debris from burning to fall thro and helps stop rear face of material being scorched too badly....+

10
Cutting / Re: Laser focus ?
« on: November 13, 2017, 02:48:31 AM »
So what speed and power rating are you using?  What experience have you using lasers?
If you are not familiar with laser cutting then.....>>>>Read this

Benbox Laser Machines/CO2 Lasers/3D Printers General Category Cutting leather cutting (OPEN)

Read  on this forum about cutting different materials.  You will get an idea of a starting figure(s)........

11
Laser Safety / Re: Reflection from laser
« on: November 09, 2017, 07:10:36 AM »
Buy at least a 1/4 inch thick (say 7mm ?)

Suggest you look here if you have not already.
.....Benbox Laser Machines/CO2 Lasers/3D Printers General Category Laser Safety Acrylic Orange Shields

Many questions asked on this forum by newcomers can be answered IF people look through the SEARCH  and INDEX (front page).

12
Laser Safety / Re: Reflection from laser
« on: November 08, 2017, 12:19:26 PM »
Check plastic (acrylic) suppliers in Europe particularly you own area.  They should have ORAMGE  which appears to be the best for BLUE lasers.....Ensure the OD is =4 or above.

13
Laser Safety / Re: Reflection from laser
« on: November 08, 2017, 06:46:05 AM »
I have used a cardboard box with an exhaust fan cut into it
I have also grabbed foam board from a dollar store and built a box with a window


Yep..just use your imagination and make sure its safe......

Here are a couple more to show what is possible....  (NOT mine by the way!)

14
Laser Safety / Re: Reflection from laser
« on: November 08, 2017, 04:02:38 AM »
There are several examples on this forum....Plywood with clear acrylic top....or an orange acrylic top or totally enclosed with a camera looking at the workpiece inside.

A DIY  example as to what is possible is shown...
You MUST ensure the  acrylic used is ok for cutting out the damaging laser light.

( Its expensive!!):P   
 I reckon in the region of UK  GBP  70+

You can save money by building it of Plywood/other material. and using  acrylic just for the lid.   The lid can also be of PLY with a window around 12 x 12  or whatever in it.

15
Laser Safety / Re: Reflection from laser
« on: November 07, 2017, 11:59:50 PM »
Think most people will agree that Common sense dictates to wear safety glasses if you are in the same room as an operating laser that is uncaged or partially caged.   In other words...it's your eyes you need be careful of......

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