UV Exposure box with mercury lamp

Note: The text is auto translated from the Greek version

We will deal with the phase of treatment pcb, with the organization and the concretization of one small development corner - those who deal with the photograph will distinguish a lot of common points and will see how from one simple film and a photosensitive pcb, can make our printing circuit.

The small what UV Box is known and as booth of report, exists also ready in the trade as can see in photograph 6, but it is very expensive because it is addressed in professionals, that manufactures many pcbs. Thus for one amateur that manufactures few pcbs it is disadvantageous, for this the reason we to you we will indicate that with simple way you can in order to you make one small UV Box which you costs very very little and will make your work marvelously.

 

 

We begin therefore the manufacture UV Box from the materials that you will need for him you manufacture:

Pieces agglomerate or MDF or wood dimensions:

• 2 pieces 250 x 550 mm (adjacent)

• 1 piece 300 x 318 mm (back)

• 1 piece 318 x 234 mm (base)

•1 piece 318 x 218 mm (bookshelf)

• 1 piece 318 x 250 mm (on facade)

• 1 piece 318 x 132 mm (down facade)

• 1 piece of aluminum of dimensions 315 x 250 mm with thickness 1,5-2,5 mm

• A piece of aluminum of dimensions 350 x 170 mm * thickness 1,5-2 mm

• 2 or 4 pieces crystal: 5 thousandth with dimension: 310 x 220 thousandth sharpening with rounded corners (for up to  A4 (210 x 297mm)

• 1 or 2 transformers for lamps steams of mercury of force 125 Watts.

• 1 or 2 lamps steams of mercury of force 125 Watts.

• 1 or 2 ntoyj' essentially porcelain with base

• 1,5 - 2 meters cable of current with three pins

• 1 plug

• 1 switch Being-off simple [ for lamp) or double (for two lamps)

• 1 line of electric connections

• 40 - 50 screws

• 1 small box 1/2 kilo Atlacoll

• 2 corners of aluminum of 10 x 10 mm form G, length 235 mm

• 2 pieces of aluminum of form P of length 350 mm

• 1 piece of aluminum of perforate thickness 1 mm, dimensions 350 x 250 mm

 

The above materials are calculated for the manufacture of box of exterior dimensions 550 x 350 x 250 mm roughly, manufactured with agglomerate of thickness 16 mm. Of course you you can use other type as MDF or plywood of sea that is men more durably but also more expensively.

Also you can modify dimensions of box as you you want, that is to say to add under a small bookshelf in order to you put film or pcb, you can also him make longer or wither depending on the space that you allocate and the dimensions pcb that you want to present.

The alone points that it should you are careful are the distance lamps from the above metal lid are 1-2 cm and from the bookshelf roughly 30 cm. Also down piece that will entertain or the transformers will be supposed to have at least 8.5 - 9 cm height so that fits comfortably but also aerate sufficiently.

 

 In order to you make the manufacture easier, you we give a line of directives that if him you follow you will meet particular difficulties. 

1.  You take piece of base and screw on his two transformers. In the transformers you connect from a double cable of electrical 2 x 1,5 flexible length 80 hundredth roughly.

2.  You take the two forward lids of dimensions 318 x 100 and 318 x 250 and screw in aluminum Π. These aluminum Π they are used as drivers so that drag on them the door as you can you see in photograph 2 in distance 255 thousandth from the above part the two adjacent screw  the two aluminum corners length 238 thousandth. Now you can stick two adjacent with the base using glue  Atlacol  and screw. If you have electric drill you will make your work very easy.

3.  Screw small under forward that have on screw  the aluminum Π. the aluminum Π will be to above and to the outside side of box. The diagrams of assembly 1 and the 2. as well as photographs 2,3 and 4 you will enlighten better. In order to easer better and in order to to you do not leave the pieces you can him nail with two tacks which you will not nail completely so that you can afterwards him remove. 

4.  You stick and screw the bookshelf that will lean above in the forward small lid and in the two adjacent.

5.  Immediately afterwards you stick the above big lid that has also this screw  the aluminum Π bringing him in the himself straight line with the above part the two adjacent. Attention the aluminum P she is turned to the base.

6.  Screw the two plugs in each adjacent in such a way that does not prevent the one lamp the other. Do not leave lamps above because it can they break. Make all the connections of lamps with the switch and the transformers. The switch you can him place front above or under or in by or where elsewhere you want. Be consulted diagram of connections form 3.

7.  You stick the back leaving two voids one under in order to aeries the transformers and one above in order to aeries lamps that you mark that hot a lot.

8.  The voids that remained above, in the behind above part and in behind under, can him cover with anyone perforate leaf of aluminum with way in order that in case of damage you can him remove and make the repair.

 

  

ATTENTION

• Prefer ready plugs for bigger safety.

• If you use one only lamp him you will place in the centre while if you use two him you will put opposite in the two adjacent.

• Her difference of one from the two lamps is that with the two lamp you have diffuse and uniform Lighting and smaller time of report.

• If you make small pcb lamp she is enough, if however you make big you need essentially two lamps because in utmost pcb the lighting will not be uniform. We you we gave the general idea you you can him improve depending on your needs and your faculties if you have and a certain known carpenter it can you help differently exists also the solution of special shops of type "Do it your self", "Mending" etc that to you will resolve the problem, is enough you are careful three points. •The distance of lampas roof (2 hundredth) •The distance of lampas - bookshelf (roughly 30 hundredth)  •The height of down part of box that exists the transformers they are at least 9 hundredth so that fits and aeries If you made the manufacture with agglomerate or  MDF  after you finish you can him stock  and him dye with your colour of your preference, while if him you made with plywood you can him burnish. UV Box your now he is ready in order to you it helps you make pcb your alone you. The panes you will be useful in order to you have absolute contact between photosensitive pcb and the films that are to present. Good Manufacture