Recent content by Jaq

Hi all, I was just wandering how many people are active on this forum, it does not look like many, as I going to be starting work as a clinical engineer soon. Is it just that there are lots of people who know what they are doing, or do we need to introduce other people to it? :-) Thanks in...

IRstuff I quite agree, a lot of the reports I write are a record of what has happened for the technical departments as well as communicating the results to a wide audience. I always use as many pictures as I can, try to move technical data nto an appendix and have a front page with just a...

Hi all, I am trying to determine a cutoff for the life of an abrasive belt based upon the surface finish it leaves. Does anyone have any experience of a range of surface Ra in a specification, or know what differences in Ra are easily visually distinguishable? Many thanks in advance, Jaq

I have come across a non-contact surface roughness measuring device called “Laser Check” being sold by Tropel. The repeatability of the results looks good, but I am not sure about the accuracy of the results. I would be using this kind of instrument to compare surface finishes with what a...

Thanks! I thought it might be something along those lines. I will have to see if I can persuade someone to part with some money!!!! Thanks again Jaq

Hi, I am testing some nylon-based abrasives, and some of them leave nylon on the surface of the work piece during use, and shows as a black “smear”. I am trying to quantify this problem, and am looking for a method of measuring the area covered by the nylon that is quick, easy and as always...

Hi Pardal, I think the answer you are looking for is vibratory bowl finishing. I'm not sure where you would find data about it... I'm sure someone else already knows!!! If I find any I will let you know. I hope this helps. Jaq

Hi, As part of a technical department I am trying to impliment some standard tests for the performance of nonwoven abrasives in various forms (discs, belts, brushes etc...). There have been suggestions of adopting standards for coated abrasives, but I know little about this. I am hoping to...

Hi, As part of a technical department I am trying to impliment some standard tests for the performance of nonwoven abrasives in various forms (discs, belts, brushes etc...). There have been suggestions of adopting standards for coated abrasives, but I know little about this. I am hoping to...