<div dir="ltr">Bill, I have done much larger ellipses on a plywood base, or sometimes I have just tacked 1x strips to the plywood to create the slots. I have never dovetailed the sliders. The slots were dados made either on the table saw or on a Router table or as I said just with strips of wood. I have put a stage weight on arm to keep it held down, or student who usually did not do the job quite as well.<div>Your mileage might vary but the method does work extremely well.</div><div>Mike</div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature">Michael Katz<br><a href="mailto:narishkup@gmail.com" target="_blank">narishkup@gmail.com</a><br><span>C: <span id="gc-number-135" class="gc-cs-link" title="Call with Google Voice">857.383.0020</span></span></div></div>
<br><div class="gmail_quote">On Mon, Dec 19, 2016 at 12:07 PM, Bill Conner via Stagecraft <span dir="ltr"><<a href="mailto:stagecraft@theatrical.net" target="_blank">stagecraft@theatrical.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">For this size ellipse a 7' "arm" is needed, and a lot of dove tail<br>
travel, so I really don't think the ellipsograph is feasible. </blockquote><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">snip<br></blockquote></div></div></div>