OPINION
KLINGEMAN, Justice.This is an appeal from a take-nothing judgment entered against appellant, Jack C. Nugent, in a products liability case involving an allegedly defective knife.1 Appellant sought to establish that the manufacturer, Utica Cutlery Company, and the seller, Mathias Klein & Sons, Inc. (appellees herein), were liable for either a manufacturing defect or a failure to warn. In answer to appellant’s liability issues, the jury failed to find that the knife was defective or that appellees breached a duty to warn.
Appellant had been performing electrician-type work for approximately one year, when in the course of his employment, he purchased from his employer, Calhoun Electric (a non-party to the suit) a knife wrapped in cellophane. When the knife was three-to-four weeks old, appellant suffered an injury to his eye while using the knife to backstrip wires on a hall fixture. Appellant’s description of the incident revealed that he was in the hallway of a house standing at an angle, when he placed the knife into the wire, just through the sheathing. As appellant stripped the wire down, the knife got caught. At this point appellant gave the knife a jerk. The knife snapped and went into his eye. Appellant blinked and fluid squirted out. He grabbed his eye and sought help. He was taken to a hospital where surgery was performed. Appellant suffered permanent injury to his eye, including loss of vision.
At the time of the injury appellant did not realize that the knife had broken. Worried about the injury to his eye, appellant really did not know what had happened to the knife. He thought it had slipped.
Appellant did not realize that the knife had broken until a few weeks after the incident; when he was out of the hospital, recuperating from the surgery performed on his eye. While going through his uniforms in order to send them to the company to be cleaned, appellant’s wife found the knife in his shirt pocket. Until this time appellant did not know the location of the knife. Discovering that the knife was broken, appellant reasoned that this was why the injury occurred. Appellant testified:
.. . when it sort of struck me, the reason it happened the way it did, because I had never had the blade come right for me, you know when it slipped off. Usually slid off to the side.
Appellant basically contends that the knife involved had a manufacturing defect which caused it to break resulting in the injury to his eye. He asserts that he was not given adequate warning of any defect and that the manufacturer represented to the public that the knife was sturdily constructed of high grade steel, carefully tempered. Appellant’s expert witness testified that it was his opinion that the top of the knife had a residue in it, which indicated that the residue resulted from a relatively high heat condition and that in metallurgical terms this condition is known as a stress riser. He testified that the stress riser was a manufacturing defect which caused the knife to break. On cross-examination appellant’s expert witness admitted that he made a 4V2 or 5 page typewritten report of the investigation he made of the knife blade to determine the cause of the fracture of the blade of the knife and that nowhere in such report was the word stress riser ever found. On further cross-exami*808nation he also testified he had used heat to cut the knife blade into four pieces.
Appellee’s expert witness testified that he obtained some pieces of the knife blade for examination and made extensive examinations of the pieces of metal. He testified that it was his opinion that the break was caused by an overload on the material which in layman’s terms meant an excessive amount of force being applied to the blade. He testified that in the course of such examination and analysis he made of the knife, he did not find any evidence of any defect or problem with the metal.
When asked what his opinion was as to the reason for or cause for the breaking where the breaking occurred, he stated:
It is apparent that the only cause of the fracture was an application of a load or stress in excess of what the material was capable of standing in the blade fracture. It was overloaded in a bending fashion. By pressing on the side of the blade to the point where the blade could no longer withstand the load and it fractured from one surface of the blade to the other.
Appellant complains in his first point of error that the trial court erred in refusing to submit to the jury the following requested special issues:
(1) Do you find from a preponderance of the evidence that defendant Mathias Klein & Sons, Inc. represented to the public that its electrician’s skinning knife, such as the knife used by Jack Nugent, was “sturdily constructed of high grade steel carefully tempered” and “guaranteed against defects in materials and workmanship.”
(2) Do you find from a preponderance of the evidence that representations of Mathias Klein & Sons, Inc. that the electrician’s skinning knife used by Jack Nu-gent on the occasion in question was “sturdily constructed of highgrade steel carefully tempered” and “guaranteed against defects in materials and workmanship” were false?
(3) Do you find from a preponderance of the evidence that such representations were relied upon by Calhoun Electric Company, in purchasing the knives sold and distributed by Defendant Mathias Klein & Sons, Inc.?
(4)Do you find from a preponderance of the evidence that such representations were a producing cause of the injury and damages, if any, suffered by Jack Nugent on June 15, 1977?
To support the submission of these requested special issues appellant contends that he pled and offered evidence to prove a cause of action based upon Restatement (Second) of Torts § 402B (1965). Section 402B is a distinct cause of action which imposes strict liability for physical harm to the consumer resulting from a misrepresentation of material fact concerning the character or quality of the product sold and, upon which the consumer justifiably relied, even though the misrepresentation is an innocent one, and not made fraudulently or negligently. Appellant asserts that the submitted special issues inquiring whether the knife was manufactured in a defective manner and, if so, was the producing cause of the injury, were based upon a section 402A cause of action and not upon a section 402B cause of action. Therefore, the trial court’s failure to submit these requested issues denied appellant a fair submission of the controlling and ultimate issues in the case.
The essential elements of a section 402B cause of action are:
(1) One engaged in the business of selling chattels
(2) who, by advertising, labels or otherwise, makes to the public a misrepresentation
(3) of a material fact concerning the character or quality of a chattel sold by him
(4) is subject to liability for physical harm to a consumer of the chattel caused by
(5) justifiable reliance upon the misrepresentation,
(6) even though it is not made fraudulently or negligently, and in the absence of any contractual relation with the seller.
*809The requested issues in question here do not ask the jury (1) whether the representations made were one of material facts or (2) whether appellant’s employer justifiably relied upon these representations when purchasing Klein tools. Appellant argues at great length that the requested issues were in substantially correct form and that the omission of these two elements was not fatal to the submission of these requested issues. Specifically, appellant contends that the representations “by their nature [were] representations of material facts concerning the character and quality of the knife” and that the requested issue addressing reliance was only at slight variance with the wording of the general rule with respect to justifiable reliance. Moreover, appellant asserts “justifiable reliance” is an inherent element of the issue of producing cause.
Appellant’s argument is without merit and does not support his contention that the failure of the trial court to submit requested issues constitutes reversible error. 3 R. McDonald, Texas Civil Practice § 12-33.2 (rev. 1970), states “When the requested special issue is one of a series of interdependent issues all of which are essential properly to submit a theory of recovery or defense (e.g., act, negligence, and proximate cause) and none of which is already included in the charge, a request is in ‘substantially correct’ form only when it incorporates all of the required special issues.” In addition, there is a line of court of civil appeals cases which states:
When a requested special issue is one of a series of interdependent issues all of which are essential to submit a theory of recovery or defense, such as discovered peril, and none of such issues are already included in the charge, a request is in substantially correct form as required by Rule 279, Texas Rules of Civil Procedure, only when it incorporates all of the required special issues.
Lee v. Howard, 483 S.W.2d 922 (Tex.Civ.App.—Eastland 1972, writ ref’d n.r.e.). See Mata v. Albert, 548 S.W.2d 496 (Tex.Civ.App.—Eastland 1972, writ ref’d n.r.e.); Yellow Cab Co. v. Smith, 381 S.W.2d 197 (Tex. Civ.App.—Waco 1964, writ ref’d n.r.e.); Holland v. Lesesne, 350 S.W.2d 859 (Tex. Civ.App.—San Antonio 1961, writ ref’d n.r. e.); Crain v. West Texas Utilities Co., 218 S.W.2d 512 (Tex.Civ.App.—Eastland 1949, writ ref’d n.r.e.); Federal Underwriters Exchange v. Tubbe, 193 S.W.2d 563 (Tex.Civ. App.—Beaumont 1946, writ ref’d n.r.e.); Attebery v. Henwood, 177 S.W.2d 95 (Tex.Civ.App.—Texarkana 1943, writ ref’d w.o.m.); City of Wichita Falls v. Lewis, 68 S.W.2d 388 (Tex.Civ.App.—Fort Worth 1933, writ dism’d).
In the case at bar, material fact and justifiable reliance are essential issues within a series of interdependent issues, all of which are essential to submit the theory of strict liability based upon misrepresentation. See Sales, The Innocent Misrepresentation Doctrine: Strict Tort Liability Under Section 402B, 16 Hous.L.Rev. 239, 256-64 (1979). Without a finding upon these special issues an affirmative finding upon the requested issues would not have been sufficient to impose liability based upon the theory of misrepresentation. Therefore, appellant’s failure to request submission of issues as to material fact and justifiable reliance was a “waiver of any right to complain here that they should have been submitted.” City of Wichita Falls v. Lewis, 68 S.W.2d 388 (Tex.Civ.App.—Fort Worth 1933, writ dism’d) (citing Ormsby v. Ratcliffe, 117 Tex. 242, 1 S.W.2d 1084 (1923)). Appellant’s first point of error is overruled.
Appellant complains in his second point of error that the trial court erred in overruling his objections to the submission of questions inquiring whether appellant misused the knife because there was no evidence to support such a defensive theory. Tex.R.Civ.P. 279 states that the trial court “shall submit controlling issues made by the written pleadings and the evidence.” See Texas General Indemnity v. Scott, 152 Tex. 1, 253 S.W.2d 651 (1958). Likewise, a defendant is entitled to an affirmative submission of his defensive issues. Schuhmacher Co. v. Holcomb, 142 Tex. 332, 177 S.W.2d 951 (1944). In General Motors Co. v. Hopkins, 548 S.W.2d 344 (Tex.1977), the *810Supreme Court stated that “misuse is a defense in products liability suits.” Id. at 349. Since appellee, in the case at bar, plead the defense of misuse, the trial court could refuse the requested issues of misuse only if there was no evidence to raise the issues. Garza v. Alviar, 395 S.W.2d 821, 824 (Tex.1965); Burke Wiley, Inc. v. Lenderman, 545 S.W.2d 226, 228 (Tex.Civ.App.—Houston [1st Dist.] 1976, writ ref’d n.r.e.).
“The evidence test for a ‘no evidence’ point is to examine the entire record for evidence that supports the submission of the issue and the finding of the jury and ignore all evidence to the contrary.” Metropolitan Life Ins. Co. v. Duncan, 566 S.W.2d 351, 352 (Tex.Civ.App.—Fort Worth 1978, no writ). We have examined the rec ord and have found testimony by appellant stating that at the time of the injury he was skinning wire by reaching overhead and pulling the knife towards him. The knife caught in the wire requiring appellant to give a “little extra tug” at the knife. Although appellant stated that the pressure exerted at this time was of no greater force than he had applied in the past, appellee’s expert witness testified that upon examination of the blade of the knife he found no defect in the metal of the knife and that the break occurred due to an excessive amount of force applied to the blade. This evidence demonstrating appellant’s use of the knife at the time of the injury, coupled with the inconclusive evidence as to when and how the knife broke, was sufficient to support the submission of issues to the jury based upon the defensive theory of misuse. Appellant’s point of error number two is overruled. Furthermore, based upon this finding, we overrule appellant’s point of error number seven which asserts that the question submitted to the jury inquiring as to the percentage of the accident attributable to appellant and appellee was erroneous because there was no evidence to support the submission of the misuse issues.
In points of error number three and four appellant complains that the trial court erred in submitting to the jury an incorrect instruction as to what constitutes misuse and that this instruction coupled with the erroneous submission of the misuse issues constituted a comment on the weight of the evidence causing the jury to believe that appellant’s misuse of the knife was the cause of the break. Appellant contends that such action was erroneous because it injected into the jury deliberations the defensive theory of misuse, therefore, depriving appellant of a fair submission of the defect issues which were actually raised by the evidence.
Although we do not believe that the trial court’s instruction on misuse was incorrect we point out that any possible error in the submission of the misuse issues and the accompanying instruction was harmless. Tex.R.Civ.P. 434 provides that a judgment shall not be reversed on appeal unless “the error complained of amounted to such a denial of the rights of the appellant as was reasonably calculated to cause and probably did cause the rendition of an improper judgment in the case.” See City of Galveston v. Hill, 151 Tex. 139, 246 S.W.2d 860, 863 (1952); Young v. Texas & Pacific Railway Co., 347 S.W.2d 345, 348-49 (Tex.Civ.App.—El Paso 1961, no writ). The Supreme Court in Boatland of Houston, Inc. v. Bailey, 609 S.W.2d 743 (Tex.1980) set out
Generally, error in the submission of an issue is harmless when the findings of the jury in answer to other issues are sufficient to support the judgment. Texas & New Orleans Railroad Co. v. McGinnis, 130 Tex. 338, 109 S.W.2d 160, 163 (1937). An exception exists, however, when the erroneously submitted issue confuses or misleads the jury. H. E. Butt Grocery Co. v. Johnson, (Tex.Civ.App.—San Antonio 1949, writ ref’d n.r.e.).
609 S.W.2d at 750. Under the theory of strict liability the existence of a manufacturer’s defect and such defect being the producing cause of appellant’s injury is the prime requirement for imposing liability on appellee in the case at bar. See Pittsburg Coca-Cola Bottling Works v. Ponder, 443 S.W.2d 546 (Tex.1961). Consequently, the jury’s finding that the knife was not manufactured in a defective manner sufficiently *811supports the judgment in favor of appellee. Therefore, any error in the submission of the misuse issues and their accompanying instructions is harmless, unless, as appellant contends such error confused or misled the jury. See Boatland, supra.
We have determined that there was evidence to support the submission of the misuse issues and that appellee was entitled to such a charge. The trial court’s submission of these issues was separate from the submission of the defect issues. Furthermore, appellant has failed to demonstrate and our review of the record has failed to show how the jury could have been confused or misled by any errors within the submission of these issues which would have resulted in the rendition of an improper judgment. Texas & Pacific Railway Co. v. Snider, 159 Tex. 380, 321 S.W.2d 280, 283 (1959). Appellant’s points of error numbers three and four are overruled.
Appellant complains in point of error number five that the trial court erred in failing to grant his motion for new trial because the jury’s finding that the knife was not manufactured in a defective manner was contrary to law, against the great weight and preponderance of the evidence, and clearly wrong for the reason that the only evidence of probative force established that the knife in question was manufactured in a defective manner and that such defect was a producing cause of appellant’s injuries. When deciding a question of fact such as that presented here this court is bound by the test set out in In re King’s Estate, 150 Tex. 662, 224 S.W.2d 660 (1951), which requires a court of appeals
to consider and weigh all of the evidence in the case and to set aside the verdict and remand the cause for a new trial, if it thus concludes that the verdict is so against the great weight and preponderance of the evidence as to be manifestly unjust — this, regardless of whether the record contains some ‘evidence of probative force’ in support of the verdict. See cases cited, supra. The evidence supporting the verdict is to be weighed along with the other evidence in the case, in-eluding that which is contrary to the verdict.
Id. at 661. Applying this “ ‘sufficiency’ of the evidence” test, id. at 661, we have determined that the jury’s finding that the knife was not manufactured in a defective manner is not against the great weight and preponderance of the evidence because there was conflicting evidence as to whether a defect existed and, if there was a defect, whether it existed at the time of manufacture or sale. In addition, there was a disparity of evidence as to the time and cause of the break. Appellant’s point of error number five is overruled.
Appellant complains in his sixth point of error that the trial court erred in failing to grant his motion for new trial because the jury’s finding that the defendant’s failure to warn plaintiff of the danger of applying force on the side of the blade during the use of the knife for stripping wire did not expose plaintiff to an unreasonable risk of harm was contrary to law, against the great weight and preponderance of the evidence, and clearly wrong for the reason that the only evidence of probative force established that appellee’s failure to warn appellant of such danger during use of the knife as an electrician’s knife exposed the appellant to an unreasonable risk of harm, and that such failure to warn was a producing cause of appellant’s injuries. Strict liability may be imposed upon appellee if appellee marketed an unreasonably dangerous, though nondefective, product “without adequate warning of its danger or without adequate direction of its use.” Lopez v. Aro Corp., 584 S.W.2d 333, 335 (Tex.Civ.App.—San Antonio 1979, writ ref’d n.r.e.). This duty to warn is evaluated in light of the expected user’s knowledge or experience. Id. at 336. The issue in the case at bar inquiring whether appellee had a duty to warn included an instruction stating that “unreasonable risk of harm” meant that “the product sold must be dangerous to an extent beyond that which would be contemplated by the ordinary electrician who uses it, with the ordinary knowledge common to such electrician as to its characteris*812tics.” Appellant and an electrician, a co-employee of appellant, both testified that when stripping wire with a skinning knife the blade often caught in the wire. When this occurred it was customary to apply additional force to the knife. The electrician testified that he knew that a knife with a stiff blade should not be exposed to excessive bending on the side and that he would not expect a warning from the manufacturer that the knife could break if pulled after it caught in the wire. Furthermore, appellee presented evidence that it recognized that use of the knife to skin wire would subject the knife to a certain amount of bending; therefore, the knife was designed and manufactured with a bend tolerance of fifteen degrees. Although appellant testified that at the time the injury occurred he only tugged at the knife, appel-lee presented evidence that the knife broke due to excessive force. Considering this evidence, as well as the inconclusive evidence as to when and how the knife broke, the jury’s finding that the appellee’s failure to warn did not expose appellant to an unreasonable risk of harm is not against the great weight and preponderance of the evidence. See In re King’s Estate, 150 Tex. 662, 244 S.W.2d 660, 661 (1951). Appellant’s sixth point of error is overruled.
All points of error have been considered and are overruled. We find no reversible error. The trial court correctly entered a judgment that appellant takes nothing.
The judgment is affirmed.
. CNA Insurance Company intervened at trial seeking subrogation to that portion of Plaintiff Nugent’s recovery equal to the amount it paid to Nugent in Worker’s Compensation Benefits plus reasonable attorney’s fees. CNA as well as Nugent timely appealed the judgment of the trial court. Since CNA’s interest is dependent upon Nugent’s recovery, it is not necessary for this court to further address CNA in this opinion.