Full Version: Just curious

From: Engravin' Dave (DATAKES) [#43]
2 Apr 2005
To: UCONN Dave & Lynn too (DANDL48) [#38] 3 Apr 2005

Dave,

I didn't bother to change my settings because Photobrasive has recommended settings of 30-35 psi. I have my system set at 30 psi.

I also use 180 grit silicon carbide for my blasting media.

From: UCONN Dave & Lynn too (DANDL48) [#44]
3 Apr 2005
To: LaZerDude (C_BURKE) [#41] 3 Apr 2005

Chuck,

It wasn't me saying to use 3 min, we use 4 and it works fine. Very difficult to overexpose RapidMask.

Dave

From: UCONN Dave & Lynn too (DANDL48) [#45]
3 Apr 2005
To: Engravin' Dave (DATAKES) [#43] 3 Apr 2005

David,

How close do you hold the nozzle from the media? You might want to try 6" and back off on the pressure.

Dave

From: LaZerDude (C_BURKE) [#46]
3 Apr 2005
To: Engravin' Dave (DATAKES) [#43] 3 Apr 2005

David,
I tried blasting these with 33psi as recommended by Photobrasive. When I turned the pressure down to 27psi, I got a much nicer etch.....

From: Harvey only (HARVEY-ONLY) [#47]
3 Apr 2005
To: LaZerDude (C_BURKE) [#46] 3 Apr 2005

Probably nothing but the standard inaccuracy of the pressure gage. Minor wear in the nozzle or venturi mixing area can make large differences also.

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