as required by the statutes , a detailed embodiment of the present invention is disclosed herein , however , that the disclosed embodiment is merely exemplary of the invention , which may be embodied in various forms . therefore , specific structural and functional details disclosed herein are not to be interpreted as limiting , but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure . referring to fig1 an adjustable corner strip 10 is used to fasten an assemblage of concrete form panels , or form 12 together , such as in the column form shown in fig1 . each separate form panel 14 includes a face 16 for contact with the poured concrete , top rail 18 , bottom rail 20 , and spaced side rails 22 , 24 . arranged in a configuration having square or rectangular cross sections throughout its length , the form includes opposite side rails 22 , 24 each connected to the adjoining side rails of the next form panel 14 by adjustable corner strip 10 . referring to fig2 the adjustable corner strip 10 is a single , extruded member , preferably made from aluminum , having spaced opposing wings 26 , 28 , each terminating in a rounded head 30 , 32 , respectively . wings 26 , 28 extend perpendicularly from arm portion 34 and are flexible , yet strongly resilient . arm portion 34 terminates in perpendicular faces 36 , 38 for engaging against a 90 ° outside corner between perpendicularly arranged panel side rails 22 or 24 . wings 26 , 28 become progressively thinner along the direction from rounded heads 30 , 32 to perpendicular faces 36 , 38 to allow resilient deflection about the juncture 40 . a preferred material for adjustable corner strip 10 is 6061 - t6 aluminum , which provides for sufficient rigidity without being brittle , which could cause cracking upon flexing . adjustable corner strip 10 may be extruded and cut to any convenient length . multiple lengths may be used on a single concrete column form panel . such columns are typically about eight feet long . rounded heads 30 , 32 include longitudinal slots 42 , 44 , respectively , extending the length of adjustable corner strip 10 and opposing and facing one another for receiving a plurality of adjustment means 46 . referring to fig3 there is shown adjustment means 46 , comprising right - hand screw 48 , left - hand screw 50 , having screw shafts in confronting relationship and being threaded int adjusting nut 52 , having right - hand threaded portion 54 and left - hand threaded portion 56 . right - hand screw 48 is threaded into right - hand threaded portion 54 and left - handed screw 50 is threaded into left - hand threaded portion 56 of adjustment nut 52 . the heads of bolts 48 , 50 fit into longitudinal slots 42 , 44 so that two opposing flats of each bolt head bear against side walls 58 , 60 of longitudinal slots 42 , 44 to prevent rotation of the bolts upon adjustment . the described arrangement of adjustment means 46 permits the adjustment means to be lengthened or shortened by turning adjusting nut 52 in one direction . when the desired adjustment has been reached , jamb nut 62 is tightened against adjusting nut 52 to prevent slippage . a plurality of fastening means 46 are equally spaced throughout the length of each adjustable corner strip 10 , typically about two feet apart . if desired , filler strips of spongy , resilient material may be urged into longitudinal slots 42 , 44 between adjacent adjustment means 46 to prevent them from becoming improperly spaced . it is not intended that adjustment means 46 be removed from adjustable corner strip 10 in the ordinary course of use . to secure adjustable squaring corner strip 10 to form panel side rails 22 , 24 , there is provided a plurality of holes 64 . holes 64 are provided in pairs on opposed , facing straight portions 66 of wings 26 , 28 . pairs of holes 64 are longitudinally spaced throughout the length of adjustable corner strip 10 and match the spacing and size of holes 68 in side rails 22 , 24 . when holes 64 and 68 are aligned , a fastener , such as a bolt or pin , is inserted through both holes and secured by a nut or other means . it is preferred that holes 64 are also aligned with fastening means 46 . in an alternative embodiment adjustable corner strip 10 does not include holes 64 , but is fastened to side rails 22 , 24 by conventional clamps , which may be a c - shaped spring - loaded clamp whose clamping ends are engaged about a side rail 22 and adjustable corner strip 10 by driving wedges into the clamp . in use , the adjustable corner strip is attached into place to connect the side rails of perpendicularly positioned form panels . some adjustment is required to bring the column form into square alignment , which is done by turning adjustment nut 52 on each of the adjustment means throughout the length of each side of the column until the diagonals of the two open ends of the form are equal . the jamb nut 62 and adjusting nut 52 are tightened together to prevent slippage . turning adjusting nut 52 either spreads wings 26 , 28 further apart , or draws them closer together , as required . in practice , it has been found that an adjustment of up to eight degrees deviation from the desired right angle between adjacent form panels can be made with the adjustable corner strip 10 . since wings 26 , 28 bear directly against the outside edge of the form panel and are secured thereto by notches 70 in each wing , moving wings 42 , 44 also causes adjacent form panels 14 to move . notches 70 naturally run the entire length of adjustable corner strip 10 , presenting the appearance of a groove or channel in adjustable corner strip 10 . notches 70 are v - shaped having side walls 72 , 74 which meet at a 90 ° angle and accordingly mate in locking engagement with the 90 ° angle of the edge of side rails 22 , 24 . naturally , notches 70 are spaced apart by the distance required to bring them into mating engagement with the 90 ° angle of the edge of each of side rails 22 , 24 ( see , especially , fig6 ). although relatively shallow in appearance , notches 70 provide an extremely tight grip on side rails 22 , 24 , permitting adjustable corner strip 10 to maintain the squared up shape of a completed column mold under severe loads . after adjustable corner strip 10 has been installed and adjusted as discussed above , it forms a springing resilient reinforcement member providing a triangular reinforcement of the open square formed by the convergence of spaced side rails 22 , 24 . forces generated by the poured concrete at the bottom of an eight foot column may exceed 1 , 250 pounds per square foot . as illustrated in fig2 by the arrows labeled &# 34 ; f ,&# 34 ; these forces tend to bow form panels 14 , but these outward forces are largely translated into longitudinal forces that flow through the metal frame outwardly toward spaced side rails 22 , 24 . when these corner joints are secured by adjustable corner strip 10 , combined with adjustment means 46 , any force tending to bend one form panel outwardly is translated into a stiffening force through both wings 26 , 28 . the outside corner angle is prevented from flexing by the rigid corner support provided by adjustable corner strip 10 , which also prevents outward rotational motion of side rails 22 , 24 . in this manner , adjustable corner strip 10 increases end fixity and overall mold rigidity by about 30 %, allowing the use of lighter - weight form panels . often it is desired to install a chamfer on each corner of a poured concrete column . referring to fig4 there is shown chamfer strip 80 , comprising chamfer portion 82 and tail 84 . chamfer strip 80 is preferably a unitary , extruded aluminum member , which may be cut to any desired length and typically would run the entire length of a column in an unbroken strip . chamfer 82 typically includes uniformly triangular cross sections of 45 ° right triangles having its hypotenuse , or face 86 , exposed to the concrete that will be poured and its legs 88 , 90 abutting the interior walls of adjacent panels 14 . tail 84 extends outwardly from leg 90 of the triangular cross section formed by chamfer 82 and lies snugly in channel 92 of side rail 22 , being made in the exact shape of channel 22 . the matched shape of tail 84 and channel 92 provide the only locating means necessary for precisely positioning chamfer strip 80 relative to form panels 14 . a plurality of spaced holes 94 in tail portion 84 aligned with holes 60 in side rails 22 , 24 , also allows these members to be readily fastened together by means of bolt 96 and nut 98 . alternatively , chamfer strip 80 may include a tail 84 that has no aperture , which is intended for use with form panels 14 whose side rails 22 , 24 do not have holes . in this embodiment , a set of conventional clamps as is used to fasten the adjacent form panels 14 together and to fasten chamfer strip 80 to form panels 14 . referring to fig7 tail 84 further comprises first flat tail portion 100 , channel tail portion 102 having dimensions that allow for snug locating engagement with the channel side rail 22 ( see , for example , fig4 ) and second flat tail portion 104 . the embodiment shown in fig7 further includes flange 106 on the end of tail 84 remote from chamfer 82 . flange 106 is integrally formed with chamfer strip 80 and lie at a 90 ° angle with respect to flat tail portions 100 , 104 , and is bent to the left as shown in fig7 providing a snap fit on side rail 22 , hence providing a second means for locating chamfer strips 80 in relation to form panels 14 . when chamfer strip 80 is utilized in a mold whose panels are held together by an angle iron , as in the prior art , poured concrete frequently seeps between faces 16 and legs 88 , 90 of chamfer 82 , resulting in an unfinished appearance in the column , or pillar . this effect is partially due to a poor fit between the chamfer and the mold , and partially due to translation of outward forces of the poured concrete being translated into bending moments that distort the panel side rails and result in column corners that are not square , thereby disrupting a seal between the chamfer and the mold that may have been acceptable prior to the pouring of the concrete . when , however , chamfer strip 80 is used in conjunction with adjustable corner strip 10 , as illustrated in fig6 the square joinder of legs 88 , 90 can be very accurately matched by a square joinder of panels 16 of adjacent form panels 14 , bringing legs 88 , 90 into tightly mating engagement with the corners of form panels 16 and side rails 22 , 24 , thereby preventing any seepage of concrete into that joint . the result is nearly perfectly formed chamfers . in the preferred embodiment disclosed herein , the cross section of chamfer strip 80 is substantially a 45 ° right triangle whose hypotenuse defines the chamfer face 86 that will actually form the chamfer on the molded product . the specific shapes of corners , corner braces , and side rails , however , need not be those illustrated . the chamfer system shown here is designed for producing a flat - edged 45 ° bevel on a rectangular cross section concrete column . naturally , the chamfer system disclosed herein can be readily adapted for producing other shapes of bevels , such as , for example , curved bevels ( which may incorporate a portion of the circumference of a circle , a french curve , and so forth ) a straight - edged bevel on a triangular , hexagonal , octagonal , and so forth shaped column or piece . this would require adjustments in the specific angles of adjustable corner strip 10 used for holding form panels together and in the specific shape and dimensions of the chamfer strip . such design modifications are well within the skill of a person of ordinary skill in the art . utilizing the techniques of the chamfer system disclosed herein any of a wide variety of different chamfers or bevels can be created , depending on the chosen shape and dimensions of chamfer 21 . utilizing the techniques of the adjustable corner strip 10 as disclosed herein a wide variety of different shaped columns or other building structures can be created . although the chamfer system here has been discussed primarily in connection with forms for molding poured concrete , it is apparent that form panels may be assembled in various designs to produce molds for concrete , indoor or outdoor plaster , clay , expanded polystyrene , rubber , any plastic materials that subsequently harden ( for example , epoxy resins ), or any other moldable material into a variety of shaped pieces . it is to be understood that while certain forms of this invention have been illustrated and described , it is not limited thereto , except in so far as such limitations are included in the following claims .