There are a couple of different ways:

1. Use a non permanent glue. There are some sprays you can get that will
be non-permanent if you spray one surface, or permanent if you spray both
surfaces.

2. try a glue that can be released by heat

3. use double sided adhesive sheets

4. just sit it there, retained by border edging.

5. use countersunk brass screws.

6. Apply the masonite to both sides of the bench top, then you can flip
it to get a good surface quickly.

Greg

"kc" wrote in message
...
What is a good way to fix a 1/4" masonite hardboard sacrifical top to a
double chipboard workbench top?
Thanks,
Ken