pcb

[rick]

hi carl-


have read your page on the "iron on" method for


making a pcb also some others at different web


sites.


my query is have you had much trouble of misregister


when applying (xfer) the toner ?? does it slip around.


do you ridgidly attach pcb to table and also edge


of xfer film ?? and have you looked at/for any


distortion of the film????


presently use positive etch resist with excellent


results--but have not tried this method yet,and


think for the pcb's here-5mil traces some--between


.1 center chips ????????? not to rebuke that which


works (photo) but to investigate other methods...


(remember those resist pens) your comments would


be welcome.


reg-rick

[Carl]

Re: pcb

>my query is have you had much trouble of misregister


>when applying (xfer) the toner ?? does it slip around.


No, actually I place the film on the board and gently apply the iron (I use a variable temp monokote iron) in the center. This sticks the film down. I then gently move the iron out from the center to all the edges making sure that I don't drag it too hard so it does not try to "pull" the film. Once I have all of the film tacked down I just go over it very thoroughly with the iron.


>do you ridgidly attach pcb to table and also edge


>of xfer film ?? and have you looked at/for any


>distortion of the film????


Again, no - I just lay the board on a table, lay the film on the board, carefully hold it in place with my fingers, and go. I don't know how much the film distorts when you iron it. It seems to be pretty stable, and the area within a DIP footprint is dead on the money. As long as this is the case, I can tolerate a little distortion over the entire board if it does so, unless I'm trying to do a double-sided.


>presently use positive etch resist with excellent


>results--but have not tried this method yet,and


>think for the pcb's here-5mil traces some--between


>.1 center chips ????????? not to rebuke that which


>works (photo) but to investigate other methods...


>(remember those resist pens) your comments would


>be welcome.


Tell you what, Rick - email me a postal address and I will send you a couple of films for my mag PCB, essentially what you saw in the report. You can try one out for yourself and see if you like.


- Carl

[rick]

Re: pcb

hi carl


thanks responce.


unless I'm trying to do a double-sided.


mine are ds-most of the time.


Tell you what, Rick - email me a postal address and I will send you a couple of films for my mag


PCB, essentially what you saw in the report. You can try one out for yourself and see if you like


thanks for the kind offer--will do so.